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Finding the Fourth Proportional to 8,838.68, 13,258 and 3,291.90

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Solution

The fourth proportional to 8,838.68, 13,258 and 3,291.90 is: 4,937.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,838.68 : 13,258 = 3,291.90 : x
  2. Step 2: Convert to fraction form
    8,838.68/13,258 = 3,291.90/x
  3. Step 3: Cross multiply
    8,838.68x = 13,258 × 3,291.90
  4. Step 4: Simplify right side
    8,838.68x = 43,644,010.20
  5. Step 5: Solve for x
    x = 43,644,010.20/8,838.68
  6. Step 6: Final answer
    x = 4,937.84

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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.