Home / 6,139.12-8,469.46-4,277.20

Finding the Fourth Proportional to 6,139.12, 8,469.46 and 4,277.20

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Solution

The fourth proportional to 6,139.12, 8,469.46 and 4,277.20 is: 5,900.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.12 : 8,469.46 = 4,277.20 : x
  2. Step 2: Convert to fraction form
    6,139.12/8,469.46 = 4,277.20/x
  3. Step 3: Cross multiply
    6,139.12x = 8,469.46 × 4,277.20
  4. Step 4: Simplify right side
    6,139.12x = 36,225,574.31
  5. Step 5: Solve for x
    x = 36,225,574.31/6,139.12
  6. Step 6: Final answer
    x = 5,900.78

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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.