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Finding the Fourth Proportional to 8,910.66, 12,296.18 and 4,931.54

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Solution

The fourth proportional to 8,910.66, 12,296.18 and 4,931.54 is: 6,805.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.66 : 12,296.18 = 4,931.54 : x
  2. Step 2: Convert to fraction form
    8,910.66/12,296.18 = 4,931.54/x
  3. Step 3: Cross multiply
    8,910.66x = 12,296.18 × 4,931.54
  4. Step 4: Simplify right side
    8,910.66x = 60,639,042.04
  5. Step 5: Solve for x
    x = 60,639,042.04/8,910.66
  6. Step 6: Final answer
    x = 6,805.22

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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.