Home / 8,278.73-12,420.16-3,839.58

Finding the Fourth Proportional to 8,278.73, 12,420.16 and 3,839.58

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Solution

The fourth proportional to 8,278.73, 12,420.16 and 3,839.58 is: 5,760.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.73 : 12,420.16 = 3,839.58 : x
  2. Step 2: Convert to fraction form
    8,278.73/12,420.16 = 3,839.58/x
  3. Step 3: Cross multiply
    8,278.73x = 12,420.16 × 3,839.58
  4. Step 4: Simplify right side
    8,278.73x = 47,688,164.20
  5. Step 5: Solve for x
    x = 47,688,164.20/8,278.73
  6. Step 6: Final answer
    x = 5,760.32

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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.