Home / 8,125.04-12,189.39-2,578.57

Finding the Fourth Proportional to 8,125.04, 12,189.39 and 2,578.57

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Solution

The fourth proportional to 8,125.04, 12,189.39 and 2,578.57 is: 3,868.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.04 : 12,189.39 = 2,578.57 : x
  2. Step 2: Convert to fraction form
    8,125.04/12,189.39 = 2,578.57/x
  3. Step 3: Cross multiply
    8,125.04x = 12,189.39 × 2,578.57
  4. Step 4: Simplify right side
    8,125.04x = 31,431,164.90
  5. Step 5: Solve for x
    x = 31,431,164.90/8,125.04
  6. Step 6: Final answer
    x = 3,868.43

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1.5x scale

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.