Home / 1,439.15-2,158.72-616.89

Finding the Fourth Proportional to 1,439.15, 2,158.72 and 616.89

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Solution

The fourth proportional to 1,439.15, 2,158.72 and 616.89 is: 925.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.15 : 2,158.72 = 616.89 : x
  2. Step 2: Convert to fraction form
    1,439.15/2,158.72 = 616.89/x
  3. Step 3: Cross multiply
    1,439.15x = 2,158.72 × 616.89
  4. Step 4: Simplify right side
    1,439.15x = 1,331,692.78
  5. Step 5: Solve for x
    x = 1,331,692.78/1,439.15
  6. Step 6: Final answer
    x = 925.33

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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.