Home / 8,418.89-12,628.20-2,876.12

Finding the Fourth Proportional to 8,418.89, 12,628.20 and 2,876.12

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Solution

The fourth proportional to 8,418.89, 12,628.20 and 2,876.12 is: 4,314.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.89 : 12,628.20 = 2,876.12 : x
  2. Step 2: Convert to fraction form
    8,418.89/12,628.20 = 2,876.12/x
  3. Step 3: Cross multiply
    8,418.89x = 12,628.20 × 2,876.12
  4. Step 4: Simplify right side
    8,418.89x = 36,320,155.44
  5. Step 5: Solve for x
    x = 36,320,155.44/8,418.89
  6. Step 6: Final answer
    x = 4,314.13

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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.