Home / 3,689.16-5,081.18-3,191.82

Finding the Fourth Proportional to 3,689.16, 5,081.18 and 3,191.82

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Solution

The fourth proportional to 3,689.16, 5,081.18 and 3,191.82 is: 4,396.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.16 : 5,081.18 = 3,191.82 : x
  2. Step 2: Convert to fraction form
    3,689.16/5,081.18 = 3,191.82/x
  3. Step 3: Cross multiply
    3,689.16x = 5,081.18 × 3,191.82
  4. Step 4: Simplify right side
    3,689.16x = 16,218,211.95
  5. Step 5: Solve for x
    x = 16,218,211.95/3,689.16
  6. Step 6: Final answer
    x = 4,396.18

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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.