Home / 1,426.14-2,139.35-560.25

Finding the Fourth Proportional to 1,426.14, 2,139.35 and 560.25

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Solution

The fourth proportional to 1,426.14, 2,139.35 and 560.25 is: 840.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.14 : 2,139.35 = 560.25 : x
  2. Step 2: Convert to fraction form
    1,426.14/2,139.35 = 560.25/x
  3. Step 3: Cross multiply
    1,426.14x = 2,139.35 × 560.25
  4. Step 4: Simplify right side
    1,426.14x = 1,198,568.04
  5. Step 5: Solve for x
    x = 1,198,568.04/1,426.14
  6. Step 6: Final answer
    x = 840.43

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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.