Home / 8,623.85-12,937.11-2,781.05

Finding the Fourth Proportional to 8,623.85, 12,937.11 and 2,781.05

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Solution

The fourth proportional to 8,623.85, 12,937.11 and 2,781.05 is: 4,172.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.85 : 12,937.11 = 2,781.05 : x
  2. Step 2: Convert to fraction form
    8,623.85/12,937.11 = 2,781.05/x
  3. Step 3: Cross multiply
    8,623.85x = 12,937.11 × 2,781.05
  4. Step 4: Simplify right side
    8,623.85x = 35,978,685.08
  5. Step 5: Solve for x
    x = 35,978,685.08/8,623.85
  6. Step 6: Final answer
    x = 4,172.00

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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.