Home / 1,439.40-2,159.10-617.14

Finding the Fourth Proportional to 1,439.40, 2,159.10 and 617.14

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Solution

The fourth proportional to 1,439.40, 2,159.10 and 617.14 is: 925.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.40 : 2,159.10 = 617.14 : x
  2. Step 2: Convert to fraction form
    1,439.40/2,159.10 = 617.14/x
  3. Step 3: Cross multiply
    1,439.40x = 2,159.10 × 617.14
  4. Step 4: Simplify right side
    1,439.40x = 1,332,466.97
  5. Step 5: Solve for x
    x = 1,332,466.97/1,439.40
  6. Step 6: Final answer
    x = 925.71

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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.