Home / 7,587.09-11,375.13-5,115.78

Finding the Fourth Proportional to 7,587.09, 11,375.13 and 5,115.78

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Solution

The fourth proportional to 7,587.09, 11,375.13 and 5,115.78 is: 7,669.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,587.09 : 11,375.13 = 5,115.78 : x
  2. Step 2: Convert to fraction form
    7,587.09/11,375.13 = 5,115.78/x
  3. Step 3: Cross multiply
    7,587.09x = 11,375.13 × 5,115.78
  4. Step 4: Simplify right side
    7,587.09x = 58,192,662.55
  5. Step 5: Solve for x
    x = 58,192,662.55/7,587.09
  6. Step 6: Final answer
    x = 7,669.96

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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.