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Finding the Fourth Proportional to 2,516.79, 3,473.19 and 1,397.91

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Solution

The fourth proportional to 2,516.79, 3,473.19 and 1,397.91 is: 1,929.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,516.79 : 3,473.19 = 1,397.91 : x
  2. Step 2: Convert to fraction form
    2,516.79/3,473.19 = 1,397.91/x
  3. Step 3: Cross multiply
    2,516.79x = 3,473.19 × 1,397.91
  4. Step 4: Simplify right side
    2,516.79x = 4,855,207.03
  5. Step 5: Solve for x
    x = 4,855,207.03/2,516.79
  6. Step 6: Final answer
    x = 1,929.13

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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.