Home / 3,713.90-5,127.06-2,872.70

Finding the Fourth Proportional to 3,713.90, 5,127.06 and 2,872.70

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Solution

The fourth proportional to 3,713.90, 5,127.06 and 2,872.70 is: 3,965.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,713.90 : 5,127.06 = 2,872.70 : x
  2. Step 2: Convert to fraction form
    3,713.90/5,127.06 = 2,872.70/x
  3. Step 3: Cross multiply
    3,713.90x = 5,127.06 × 2,872.70
  4. Step 4: Simplify right side
    3,713.90x = 14,728,505.26
  5. Step 5: Solve for x
    x = 14,728,505.26/3,713.90
  6. Step 6: Final answer
    x = 3,965.78

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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.