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Finding the Fourth Proportional to 7,884.86, 10,881.88 and 5,891.96

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Solution

The fourth proportional to 7,884.86, 10,881.88 and 5,891.96 is: 8,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,884.86 : 10,881.88 = 5,891.96 : x
  2. Step 2: Convert to fraction form
    7,884.86/10,881.88 = 5,891.96/x
  3. Step 3: Cross multiply
    7,884.86x = 10,881.88 × 5,891.96
  4. Step 4: Simplify right side
    7,884.86x = 64,115,552.95
  5. Step 5: Solve for x
    x = 64,115,552.95/7,884.86
  6. Step 6: Final answer
    x = 8,131.48

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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.