Home / 8,321.07-12,483.97-2,778.04

Finding the Fourth Proportional to 8,321.07, 12,483.97 and 2,778.04

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Solution

The fourth proportional to 8,321.07, 12,483.97 and 2,778.04 is: 4,167.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.07 : 12,483.97 = 2,778.04 : x
  2. Step 2: Convert to fraction form
    8,321.07/12,483.97 = 2,778.04/x
  3. Step 3: Cross multiply
    8,321.07x = 12,483.97 × 2,778.04
  4. Step 4: Simplify right side
    8,321.07x = 34,680,968.02
  5. Step 5: Solve for x
    x = 34,680,968.02/8,321.07
  6. Step 6: Final answer
    x = 4,167.85

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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.