Home / 9,308.88-12,841.20-7,999.92

Finding the Fourth Proportional to 9,308.88, 12,841.20 and 7,999.92

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Solution

The fourth proportional to 9,308.88, 12,841.20 and 7,999.92 is: 11,035.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,308.88 : 12,841.20 = 7,999.92 : x
  2. Step 2: Convert to fraction form
    9,308.88/12,841.20 = 7,999.92/x
  3. Step 3: Cross multiply
    9,308.88x = 12,841.20 × 7,999.92
  4. Step 4: Simplify right side
    9,308.88x = 102,728,572.70
  5. Step 5: Solve for x
    x = 102,728,572.70/9,308.88
  6. Step 6: Final answer
    x = 11,035.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.