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Finding the Fourth Proportional to 2,474.19, 3,711.29 and 742.82

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Solution

The fourth proportional to 2,474.19, 3,711.29 and 742.82 is: 1,114.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,474.19 : 3,711.29 = 742.82 : x
  2. Step 2: Convert to fraction form
    2,474.19/3,711.29 = 742.82/x
  3. Step 3: Cross multiply
    2,474.19x = 3,711.29 × 742.82
  4. Step 4: Simplify right side
    2,474.19x = 2,756,798.17
  5. Step 5: Solve for x
    x = 2,756,798.17/2,474.19
  6. Step 6: Final answer
    x = 1,114.22

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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.