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Finding the Fourth Proportional to 6,881.52, 9,498.92 and 4,087

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Solution

The fourth proportional to 6,881.52, 9,498.92 and 4,087 is: 5,641.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,881.52 : 9,498.92 = 4,087 : x
  2. Step 2: Convert to fraction form
    6,881.52/9,498.92 = 4,087/x
  3. Step 3: Cross multiply
    6,881.52x = 9,498.92 × 4,087
  4. Step 4: Simplify right side
    6,881.52x = 38,822,086.04
  5. Step 5: Solve for x
    x = 38,822,086.04/6,881.52
  6. Step 6: Final answer
    x = 5,641.50

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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.