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Finding the Fourth Proportional to 2,516.57, 3,472.72 and 1,397.44

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Solution

The fourth proportional to 2,516.57, 3,472.72 and 1,397.44 is: 1,928.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,516.57 : 3,472.72 = 1,397.44 : x
  2. Step 2: Convert to fraction form
    2,516.57/3,472.72 = 1,397.44/x
  3. Step 3: Cross multiply
    2,516.57x = 3,472.72 × 1,397.44
  4. Step 4: Simplify right side
    2,516.57x = 4,852,912.82
  5. Step 5: Solve for x
    x = 4,852,912.82/2,516.57
  6. Step 6: Final answer
    x = 1,928.38

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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.