Home / 5,515.38-7,611.03-3,155.85

Finding the Fourth Proportional to 5,515.38, 7,611.03 and 3,155.85

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Solution

The fourth proportional to 5,515.38, 7,611.03 and 3,155.85 is: 4,354.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.38 : 7,611.03 = 3,155.85 : x
  2. Step 2: Convert to fraction form
    5,515.38/7,611.03 = 3,155.85/x
  3. Step 3: Cross multiply
    5,515.38x = 7,611.03 × 3,155.85
  4. Step 4: Simplify right side
    5,515.38x = 24,019,269.03
  5. Step 5: Solve for x
    x = 24,019,269.03/5,515.38
  6. Step 6: Final answer
    x = 4,354.96

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.