Home / 5,187.06-7,781.94-1,489.55

Finding the Fourth Proportional to 5,187.06, 7,781.94 and 1,489.55

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Solution

The fourth proportional to 5,187.06, 7,781.94 and 1,489.55 is: 2,234.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.06 : 7,781.94 = 1,489.55 : x
  2. Step 2: Convert to fraction form
    5,187.06/7,781.94 = 1,489.55/x
  3. Step 3: Cross multiply
    5,187.06x = 7,781.94 × 1,489.55
  4. Step 4: Simplify right side
    5,187.06x = 11,591,549.82
  5. Step 5: Solve for x
    x = 11,591,549.82/5,187.06
  6. Step 6: Final answer
    x = 2,234.71

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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.