Home / 6,422.20-9,631.50-3,135.40

Finding the Fourth Proportional to 6,422.20, 9,631.50 and 3,135.40

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Solution

The fourth proportional to 6,422.20, 9,631.50 and 3,135.40 is: 4,702.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.20 : 9,631.50 = 3,135.40 : x
  2. Step 2: Convert to fraction form
    6,422.20/9,631.50 = 3,135.40/x
  3. Step 3: Cross multiply
    6,422.20x = 9,631.50 × 3,135.40
  4. Step 4: Simplify right side
    6,422.20x = 30,198,605.10
  5. Step 5: Solve for x
    x = 30,198,605.10/6,422.20
  6. Step 6: Final answer
    x = 4,702.22

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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.