Home / 8,418.68-12,628-2,869.36

Finding the Fourth Proportional to 8,418.68, 12,628 and 2,869.36

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Solution

The fourth proportional to 8,418.68, 12,628 and 2,869.36 is: 4,304.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.68 : 12,628 = 2,869.36 : x
  2. Step 2: Convert to fraction form
    8,418.68/12,628 = 2,869.36/x
  3. Step 3: Cross multiply
    8,418.68x = 12,628 × 2,869.36
  4. Step 4: Simplify right side
    8,418.68x = 36,234,278.08
  5. Step 5: Solve for x
    x = 36,234,278.08/8,418.68
  6. Step 6: Final answer
    x = 4,304.03

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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.