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Finding the Fourth Proportional to 6,881.97, 10,322.95 and 1,687.85

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Solution

The fourth proportional to 6,881.97, 10,322.95 and 1,687.85 is: 2,531.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,881.97 : 10,322.95 = 1,687.85 : x
  2. Step 2: Convert to fraction form
    6,881.97/10,322.95 = 1,687.85/x
  3. Step 3: Cross multiply
    6,881.97x = 10,322.95 × 1,687.85
  4. Step 4: Simplify right side
    6,881.97x = 17,423,591.16
  5. Step 5: Solve for x
    x = 17,423,591.16/6,881.97
  6. Step 6: Final answer
    x = 2,531.77

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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.