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Finding the Fourth Proportional to 8,810, 13,215.36 and 2,654

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Solution

The fourth proportional to 8,810, 13,215.36 and 2,654 is: 3,981.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,810 : 13,215.36 = 2,654 : x
  2. Step 2: Convert to fraction form
    8,810/13,215.36 = 2,654/x
  3. Step 3: Cross multiply
    8,810x = 13,215.36 × 2,654
  4. Step 4: Simplify right side
    8,810x = 35,073,565.44
  5. Step 5: Solve for x
    x = 35,073,565.44/8,810
  6. Step 6: Final answer
    x = 3,981.11

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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.