Home / 5,731.20-8,603.20-3,132.80

Finding the Fourth Proportional to 5,731.20, 8,603.20 and 3,132.80

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Solution

The fourth proportional to 5,731.20, 8,603.20 and 3,132.80 is: 4,702.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,731.20 : 8,603.20 = 3,132.80 : x
  2. Step 2: Convert to fraction form
    5,731.20/8,603.20 = 3,132.80/x
  3. Step 3: Cross multiply
    5,731.20x = 8,603.20 × 3,132.80
  4. Step 4: Simplify right side
    5,731.20x = 26,952,104.96
  5. Step 5: Solve for x
    x = 26,952,104.96/5,731.20
  6. Step 6: Final answer
    x = 4,702.70

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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.