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Finding the Fourth Proportional to 4,719.70, 7,079.55 and 4,249.90

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Solution

The fourth proportional to 4,719.70, 7,079.55 and 4,249.90 is: 6,374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,719.70 : 7,079.55 = 4,249.90 : x
  2. Step 2: Convert to fraction form
    4,719.70/7,079.55 = 4,249.90/x
  3. Step 3: Cross multiply
    4,719.70x = 7,079.55 × 4,249.90
  4. Step 4: Simplify right side
    4,719.70x = 30,087,379.55
  5. Step 5: Solve for x
    x = 30,087,379.55/4,719.70
  6. Step 6: Final answer
    x = 6,374.85

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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.