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Finding the Fourth Proportional to 8,389.98, 12,577.11 and 2,839.44

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Solution

The fourth proportional to 8,389.98, 12,577.11 and 2,839.44 is: 4,256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.98 : 12,577.11 = 2,839.44 : x
  2. Step 2: Convert to fraction form
    8,389.98/12,577.11 = 2,839.44/x
  3. Step 3: Cross multiply
    8,389.98x = 12,577.11 × 2,839.44
  4. Step 4: Simplify right side
    8,389.98x = 35,711,914.99
  5. Step 5: Solve for x
    x = 35,711,914.99/8,389.98
  6. Step 6: Final answer
    x = 4,256.50

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1.5x scale

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.