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Finding the Fourth Proportional to 6,647.32, 9,965.70 and 4,562.20

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Solution

The fourth proportional to 6,647.32, 9,965.70 and 4,562.20 is: 6,839.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,647.32 : 9,965.70 = 4,562.20 : x
  2. Step 2: Convert to fraction form
    6,647.32/9,965.70 = 4,562.20/x
  3. Step 3: Cross multiply
    6,647.32x = 9,965.70 × 4,562.20
  4. Step 4: Simplify right side
    6,647.32x = 45,465,516.54
  5. Step 5: Solve for x
    x = 45,465,516.54/6,647.32
  6. Step 6: Final answer
    x = 6,839.68

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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.