Home / 8,328.78-12,493.74-2,781.90

Finding the Fourth Proportional to 8,328.78, 12,493.74 and 2,781.90

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Solution

The fourth proportional to 8,328.78, 12,493.74 and 2,781.90 is: 4,173.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,328.78 : 12,493.74 = 2,781.90 : x
  2. Step 2: Convert to fraction form
    8,328.78/12,493.74 = 2,781.90/x
  3. Step 3: Cross multiply
    8,328.78x = 12,493.74 × 2,781.90
  4. Step 4: Simplify right side
    8,328.78x = 34,756,335.31
  5. Step 5: Solve for x
    x = 34,756,335.31/8,328.78
  6. Step 6: Final answer
    x = 4,173.04

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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.