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Finding the Fourth Proportional to 3,711.66, 5,115.87 and 2,963.22

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Solution

The fourth proportional to 3,711.66, 5,115.87 and 2,963.22 is: 4,084.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.66 : 5,115.87 = 2,963.22 : x
  2. Step 2: Convert to fraction form
    3,711.66/5,115.87 = 2,963.22/x
  3. Step 3: Cross multiply
    3,711.66x = 5,115.87 × 2,963.22
  4. Step 4: Simplify right side
    3,711.66x = 15,159,448.30
  5. Step 5: Solve for x
    x = 15,159,448.30/3,711.66
  6. Step 6: Final answer
    x = 4,084.28

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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.