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Finding the Fourth Proportional to 8,825.10, 13,239.48 and 2,981.64

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Solution

The fourth proportional to 8,825.10, 13,239.48 and 2,981.64 is: 4,473.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,825.10 : 13,239.48 = 2,981.64 : x
  2. Step 2: Convert to fraction form
    8,825.10/13,239.48 = 2,981.64/x
  3. Step 3: Cross multiply
    8,825.10x = 13,239.48 × 2,981.64
  4. Step 4: Simplify right side
    8,825.10x = 39,475,363.15
  5. Step 5: Solve for x
    x = 39,475,363.15/8,825.10
  6. Step 6: Final answer
    x = 4,473.08

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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.