Home / 8,720.48-13,081.80-2,879.12

Finding the Fourth Proportional to 8,720.48, 13,081.80 and 2,879.12

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Solution

The fourth proportional to 8,720.48, 13,081.80 and 2,879.12 is: 4,319.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.48 : 13,081.80 = 2,879.12 : x
  2. Step 2: Convert to fraction form
    8,720.48/13,081.80 = 2,879.12/x
  3. Step 3: Cross multiply
    8,720.48x = 13,081.80 × 2,879.12
  4. Step 4: Simplify right side
    8,720.48x = 37,664,072.02
  5. Step 5: Solve for x
    x = 37,664,072.02/8,720.48
  6. Step 6: Final answer
    x = 4,319.04

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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.