Home / 2,426.40-3,640.56-1,127.28

Finding the Fourth Proportional to 2,426.40, 3,640.56 and 1,127.28

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Solution

The fourth proportional to 2,426.40, 3,640.56 and 1,127.28 is: 1,691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,426.40 : 3,640.56 = 1,127.28 : x
  2. Step 2: Convert to fraction form
    2,426.40/3,640.56 = 1,127.28/x
  3. Step 3: Cross multiply
    2,426.40x = 3,640.56 × 1,127.28
  4. Step 4: Simplify right side
    2,426.40x = 4,103,930.48
  5. Step 5: Solve for x
    x = 4,103,930.48/2,426.40
  6. Step 6: Final answer
    x = 1,691.37

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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.