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Finding the Fourth Proportional to 6,604.40, 9,920.28 and 6,382.96

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Solution

The fourth proportional to 6,604.40, 9,920.28 and 6,382.96 is: 9,587.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,604.40 : 9,920.28 = 6,382.96 : x
  2. Step 2: Convert to fraction form
    6,604.40/9,920.28 = 6,382.96/x
  3. Step 3: Cross multiply
    6,604.40x = 9,920.28 × 6,382.96
  4. Step 4: Simplify right side
    6,604.40x = 63,320,750.43
  5. Step 5: Solve for x
    x = 63,320,750.43/6,604.40
  6. Step 6: Final answer
    x = 9,587.66

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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.