Home / 1,542.56-2,126.18-1,227.28

Finding the Fourth Proportional to 1,542.56, 2,126.18 and 1,227.28

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Solution

The fourth proportional to 1,542.56, 2,126.18 and 1,227.28 is: 1,691.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.56 : 2,126.18 = 1,227.28 : x
  2. Step 2: Convert to fraction form
    1,542.56/2,126.18 = 1,227.28/x
  3. Step 3: Cross multiply
    1,542.56x = 2,126.18 × 1,227.28
  4. Step 4: Simplify right side
    1,542.56x = 2,609,418.19
  5. Step 5: Solve for x
    x = 2,609,418.19/1,542.56
  6. Step 6: Final answer
    x = 1,691.62

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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.