Home / 8,219.87-12,337.13-3,839.80

Finding the Fourth Proportional to 8,219.87, 12,337.13 and 3,839.80

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Solution

The fourth proportional to 8,219.87, 12,337.13 and 3,839.80 is: 5,763.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219.87 : 12,337.13 = 3,839.80 : x
  2. Step 2: Convert to fraction form
    8,219.87/12,337.13 = 3,839.80/x
  3. Step 3: Cross multiply
    8,219.87x = 12,337.13 × 3,839.80
  4. Step 4: Simplify right side
    8,219.87x = 47,372,030.89
  5. Step 5: Solve for x
    x = 47,372,030.89/8,219.87
  6. Step 6: Final answer
    x = 5,763.11

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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.