Home / 3,306.70-4,960.05-1,115.20

Finding the Fourth Proportional to 3,306.70, 4,960.05 and 1,115.20

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Solution

The fourth proportional to 3,306.70, 4,960.05 and 1,115.20 is: 1,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,306.70 : 4,960.05 = 1,115.20 : x
  2. Step 2: Convert to fraction form
    3,306.70/4,960.05 = 1,115.20/x
  3. Step 3: Cross multiply
    3,306.70x = 4,960.05 × 1,115.20
  4. Step 4: Simplify right side
    3,306.70x = 5,531,447.76
  5. Step 5: Solve for x
    x = 5,531,447.76/3,306.70
  6. Step 6: Final answer
    x = 1,672.80

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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.