Home / 9,154.82-12,636.25-5,378.13

Finding the Fourth Proportional to 9,154.82, 12,636.25 and 5,378.13

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Solution

The fourth proportional to 9,154.82, 12,636.25 and 5,378.13 is: 7,423.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,154.82 : 12,636.25 = 5,378.13 : x
  2. Step 2: Convert to fraction form
    9,154.82/12,636.25 = 5,378.13/x
  3. Step 3: Cross multiply
    9,154.82x = 12,636.25 × 5,378.13
  4. Step 4: Simplify right side
    9,154.82x = 67,959,381.77
  5. Step 5: Solve for x
    x = 67,959,381.77/9,154.82
  6. Step 6: Final answer
    x = 7,423.34

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Half scale
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Double scale
Find fourth proportional to 9,155.82, 12,637.63 and 5,379.13
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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.