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Finding the Fourth Proportional to 4,255.53, 5,871.02 and 3,139.13

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Solution

The fourth proportional to 4,255.53, 5,871.02 and 3,139.13 is: 4,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,255.53 : 5,871.02 = 3,139.13 : x
  2. Step 2: Convert to fraction form
    4,255.53/5,871.02 = 3,139.13/x
  3. Step 3: Cross multiply
    4,255.53x = 5,871.02 × 3,139.13
  4. Step 4: Simplify right side
    4,255.53x = 18,429,849.96
  5. Step 5: Solve for x
    x = 18,429,849.96/4,255.53
  6. Step 6: Final answer
    x = 4,330.80

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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.