Home / 9,370.77-12,931.16-5,178.75

Finding the Fourth Proportional to 9,370.77, 12,931.16 and 5,178.75

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Solution

The fourth proportional to 9,370.77, 12,931.16 and 5,178.75 is: 7,146.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.77 : 12,931.16 = 5,178.75 : x
  2. Step 2: Convert to fraction form
    9,370.77/12,931.16 = 5,178.75/x
  3. Step 3: Cross multiply
    9,370.77x = 12,931.16 × 5,178.75
  4. Step 4: Simplify right side
    9,370.77x = 66,967,218.96
  5. Step 5: Solve for x
    x = 66,967,218.96/9,370.77
  6. Step 6: Final answer
    x = 7,146.39

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Find fourth proportional to 4,685.39, 6,465.58 and 2,589.38
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.