Home / 8,760.19-13,139.85-4,078.53

Finding the Fourth Proportional to 8,760.19, 13,139.85 and 4,078.53

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Solution

The fourth proportional to 8,760.19, 13,139.85 and 4,078.53 is: 6,117.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760.19 : 13,139.85 = 4,078.53 : x
  2. Step 2: Convert to fraction form
    8,760.19/13,139.85 = 4,078.53/x
  3. Step 3: Cross multiply
    8,760.19x = 13,139.85 × 4,078.53
  4. Step 4: Simplify right side
    8,760.19x = 53,591,272.42
  5. Step 5: Solve for x
    x = 53,591,272.42/8,760.19
  6. Step 6: Final answer
    x = 6,117.59

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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.