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Finding the Fourth Proportional to 8,750.66, 13,120.68 and 3,486.47

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Solution

The fourth proportional to 8,750.66, 13,120.68 and 3,486.47 is: 5,227.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.66 : 13,120.68 = 3,486.47 : x
  2. Step 2: Convert to fraction form
    8,750.66/13,120.68 = 3,486.47/x
  3. Step 3: Cross multiply
    8,750.66x = 13,120.68 × 3,486.47
  4. Step 4: Simplify right side
    8,750.66x = 45,744,841.57
  5. Step 5: Solve for x
    x = 45,744,841.57/8,750.66
  6. Step 6: Final answer
    x = 5,227.59

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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.