Home / 6,186.80-8,538.18-4,087.28

Finding the Fourth Proportional to 6,186.80, 8,538.18 and 4,087.28

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Solution

The fourth proportional to 6,186.80, 8,538.18 and 4,087.28 is: 5,640.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,186.80 : 8,538.18 = 4,087.28 : x
  2. Step 2: Convert to fraction form
    6,186.80/8,538.18 = 4,087.28/x
  3. Step 3: Cross multiply
    6,186.80x = 8,538.18 × 4,087.28
  4. Step 4: Simplify right side
    6,186.80x = 34,897,932.35
  5. Step 5: Solve for x
    x = 34,897,932.35/6,186.80
  6. Step 6: Final answer
    x = 5,640.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.