Home / 1,425.26-2,139.10-560.18

Finding the Fourth Proportional to 1,425.26, 2,139.10 and 560.18

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Solution

The fourth proportional to 1,425.26, 2,139.10 and 560.18 is: 840.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.26 : 2,139.10 = 560.18 : x
  2. Step 2: Convert to fraction form
    1,425.26/2,139.10 = 560.18/x
  3. Step 3: Cross multiply
    1,425.26x = 2,139.10 × 560.18
  4. Step 4: Simplify right side
    1,425.26x = 1,198,281.04
  5. Step 5: Solve for x
    x = 1,198,281.04/1,425.26
  6. Step 6: Final answer
    x = 840.75

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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.