Home / 3,979.34-5,473.23-3,191.66

Finding the Fourth Proportional to 3,979.34, 5,473.23 and 3,191.66

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Solution

The fourth proportional to 3,979.34, 5,473.23 and 3,191.66 is: 4,389.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.34 : 5,473.23 = 3,191.66 : x
  2. Step 2: Convert to fraction form
    3,979.34/5,473.23 = 3,191.66/x
  3. Step 3: Cross multiply
    3,979.34x = 5,473.23 × 3,191.66
  4. Step 4: Simplify right side
    3,979.34x = 17,468,689.26
  5. Step 5: Solve for x
    x = 17,468,689.26/3,979.34
  6. Step 6: Final answer
    x = 4,389.85

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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.