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Finding the Fourth Proportional to 4,507.71, 6,762.21 and 1,387.97

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Solution

The fourth proportional to 4,507.71, 6,762.21 and 1,387.97 is: 2,082.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,507.71 : 6,762.21 = 1,387.97 : x
  2. Step 2: Convert to fraction form
    4,507.71/6,762.21 = 1,387.97/x
  3. Step 3: Cross multiply
    4,507.71x = 6,762.21 × 1,387.97
  4. Step 4: Simplify right side
    4,507.71x = 9,385,761.52
  5. Step 5: Solve for x
    x = 9,385,761.52/4,507.71
  6. Step 6: Final answer
    x = 2,082.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.