Home / 8,720.90-13,084.10-2,881.61

Finding the Fourth Proportional to 8,720.90, 13,084.10 and 2,881.61

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Solution

The fourth proportional to 8,720.90, 13,084.10 and 2,881.61 is: 4,323.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.90 : 13,084.10 = 2,881.61 : x
  2. Step 2: Convert to fraction form
    8,720.90/13,084.10 = 2,881.61/x
  3. Step 3: Cross multiply
    8,720.90x = 13,084.10 × 2,881.61
  4. Step 4: Simplify right side
    8,720.90x = 37,703,253.44
  5. Step 5: Solve for x
    x = 37,703,253.44/8,720.90
  6. Step 6: Final answer
    x = 4,323.32

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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.