Home / 8,386.38-12,578.85-2,839.60

Finding the Fourth Proportional to 8,386.38, 12,578.85 and 2,839.60

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Solution

The fourth proportional to 8,386.38, 12,578.85 and 2,839.60 is: 4,259.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.38 : 12,578.85 = 2,839.60 : x
  2. Step 2: Convert to fraction form
    8,386.38/12,578.85 = 2,839.60/x
  3. Step 3: Cross multiply
    8,386.38x = 12,578.85 × 2,839.60
  4. Step 4: Simplify right side
    8,386.38x = 35,718,902.46
  5. Step 5: Solve for x
    x = 35,718,902.46/8,386.38
  6. Step 6: Final answer
    x = 4,259.16

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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.