Home / 8,148.54-12,220.85-3,761.78

Finding the Fourth Proportional to 8,148.54, 12,220.85 and 3,761.78

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Solution

The fourth proportional to 8,148.54, 12,220.85 and 3,761.78 is: 5,641.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,148.54 : 12,220.85 = 3,761.78 : x
  2. Step 2: Convert to fraction form
    8,148.54/12,220.85 = 3,761.78/x
  3. Step 3: Cross multiply
    8,148.54x = 12,220.85 × 3,761.78
  4. Step 4: Simplify right side
    8,148.54x = 45,972,189.07
  5. Step 5: Solve for x
    x = 45,972,189.07/8,148.54
  6. Step 6: Final answer
    x = 5,641.77

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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.