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Finding the Fourth Proportional to 5,711.92, 7,881.84 and 3,193.77

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Solution

The fourth proportional to 5,711.92, 7,881.84 and 3,193.77 is: 4,407.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,711.92 : 7,881.84 = 3,193.77 : x
  2. Step 2: Convert to fraction form
    5,711.92/7,881.84 = 3,193.77/x
  3. Step 3: Cross multiply
    5,711.92x = 7,881.84 × 3,193.77
  4. Step 4: Simplify right side
    5,711.92x = 25,172,784.14
  5. Step 5: Solve for x
    x = 25,172,784.14/5,711.92
  6. Step 6: Final answer
    x = 4,407.06

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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.