Home / 8,720.60-13,073.15-3,172.91

Finding the Fourth Proportional to 8,720.60, 13,073.15 and 3,172.91

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Solution

The fourth proportional to 8,720.60, 13,073.15 and 3,172.91 is: 4,756.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.60 : 13,073.15 = 3,172.91 : x
  2. Step 2: Convert to fraction form
    8,720.60/13,073.15 = 3,172.91/x
  3. Step 3: Cross multiply
    8,720.60x = 13,073.15 × 3,172.91
  4. Step 4: Simplify right side
    8,720.60x = 41,479,853.09
  5. Step 5: Solve for x
    x = 41,479,853.09/8,720.60
  6. Step 6: Final answer
    x = 4,756.54

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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.