Home / 8,387.89-12,581.60-3,453.84

Finding the Fourth Proportional to 8,387.89, 12,581.60 and 3,453.84

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Solution

The fourth proportional to 8,387.89, 12,581.60 and 3,453.84 is: 5,180.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.89 : 12,581.60 = 3,453.84 : x
  2. Step 2: Convert to fraction form
    8,387.89/12,581.60 = 3,453.84/x
  3. Step 3: Cross multiply
    8,387.89x = 12,581.60 × 3,453.84
  4. Step 4: Simplify right side
    8,387.89x = 43,454,816.07
  5. Step 5: Solve for x
    x = 43,454,816.07/8,387.89
  6. Step 6: Final answer
    x = 5,180.66

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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.