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Finding the Fourth Proportional to 7,230.60, 10,820.30 and 6,616.20

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Solution

The fourth proportional to 7,230.60, 10,820.30 and 6,616.20 is: 9,900.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230.60 : 10,820.30 = 6,616.20 : x
  2. Step 2: Convert to fraction form
    7,230.60/10,820.30 = 6,616.20/x
  3. Step 3: Cross multiply
    7,230.60x = 10,820.30 × 6,616.20
  4. Step 4: Simplify right side
    7,230.60x = 71,589,268.86
  5. Step 5: Solve for x
    x = 71,589,268.86/7,230.60
  6. Step 6: Final answer
    x = 9,900.88

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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.