Home / 1,626.80-2,439.30-702.20

Finding the Fourth Proportional to 1,626.80, 2,439.30 and 702.20

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Solution

The fourth proportional to 1,626.80, 2,439.30 and 702.20 is: 1,052.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,626.80 : 2,439.30 = 702.20 : x
  2. Step 2: Convert to fraction form
    1,626.80/2,439.30 = 702.20/x
  3. Step 3: Cross multiply
    1,626.80x = 2,439.30 × 702.20
  4. Step 4: Simplify right side
    1,626.80x = 1,712,876.46
  5. Step 5: Solve for x
    x = 1,712,876.46/1,626.80
  6. Step 6: Final answer
    x = 1,052.91

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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.