Home / 6,429.60-9,644.40-3,149.10

Finding the Fourth Proportional to 6,429.60, 9,644.40 and 3,149.10

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Solution

The fourth proportional to 6,429.60, 9,644.40 and 3,149.10 is: 4,723.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.60 : 9,644.40 = 3,149.10 : x
  2. Step 2: Convert to fraction form
    6,429.60/9,644.40 = 3,149.10/x
  3. Step 3: Cross multiply
    6,429.60x = 9,644.40 × 3,149.10
  4. Step 4: Simplify right side
    6,429.60x = 30,371,180.04
  5. Step 5: Solve for x
    x = 30,371,180.04/6,429.60
  6. Step 6: Final answer
    x = 4,723.65

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Similar ratio
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1.5x scale

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.