Home / 8,585.28-12,879.12-2,739.90

Finding the Fourth Proportional to 8,585.28, 12,879.12 and 2,739.90

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Solution

The fourth proportional to 8,585.28, 12,879.12 and 2,739.90 is: 4,110.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,585.28 : 12,879.12 = 2,739.90 : x
  2. Step 2: Convert to fraction form
    8,585.28/12,879.12 = 2,739.90/x
  3. Step 3: Cross multiply
    8,585.28x = 12,879.12 × 2,739.90
  4. Step 4: Simplify right side
    8,585.28x = 35,287,500.89
  5. Step 5: Solve for x
    x = 35,287,500.89/8,585.28
  6. Step 6: Final answer
    x = 4,110.23

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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.