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Finding the Fourth Proportional to 6,625.92, 9,945.12 and 4,778.88

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Solution

The fourth proportional to 6,625.92, 9,945.12 and 4,778.88 is: 7,172.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,625.92 : 9,945.12 = 4,778.88 : x
  2. Step 2: Convert to fraction form
    6,625.92/9,945.12 = 4,778.88/x
  3. Step 3: Cross multiply
    6,625.92x = 9,945.12 × 4,778.88
  4. Step 4: Simplify right side
    6,625.92x = 47,526,535.07
  5. Step 5: Solve for x
    x = 47,526,535.07/6,625.92
  6. Step 6: Final answer
    x = 7,172.82

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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.