Home / 4,742.20-7,113.30-4,231.90

Finding the Fourth Proportional to 4,742.20, 7,113.30 and 4,231.90

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Solution

The fourth proportional to 4,742.20, 7,113.30 and 4,231.90 is: 6,347.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.20 : 7,113.30 = 4,231.90 : x
  2. Step 2: Convert to fraction form
    4,742.20/7,113.30 = 4,231.90/x
  3. Step 3: Cross multiply
    4,742.20x = 7,113.30 × 4,231.90
  4. Step 4: Simplify right side
    4,742.20x = 30,102,774.27
  5. Step 5: Solve for x
    x = 30,102,774.27/4,742.20
  6. Step 6: Final answer
    x = 6,347.85

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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.