Home / 5,142.52-7,712.57-1,445.10

Finding the Fourth Proportional to 5,142.52, 7,712.57 and 1,445.10

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Solution

The fourth proportional to 5,142.52, 7,712.57 and 1,445.10 is: 2,167.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.52 : 7,712.57 = 1,445.10 : x
  2. Step 2: Convert to fraction form
    5,142.52/7,712.57 = 1,445.10/x
  3. Step 3: Cross multiply
    5,142.52x = 7,712.57 × 1,445.10
  4. Step 4: Simplify right side
    5,142.52x = 11,145,434.91
  5. Step 5: Solve for x
    x = 11,145,434.91/5,142.52
  6. Step 6: Final answer
    x = 2,167.31

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1.5x scale

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.