Home / 3,191.70-4,399.92-2,306.10

Finding the Fourth Proportional to 3,191.70, 4,399.92 and 2,306.10

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Solution

The fourth proportional to 3,191.70, 4,399.92 and 2,306.10 is: 3,179.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.70 : 4,399.92 = 2,306.10 : x
  2. Step 2: Convert to fraction form
    3,191.70/4,399.92 = 2,306.10/x
  3. Step 3: Cross multiply
    3,191.70x = 4,399.92 × 2,306.10
  4. Step 4: Simplify right side
    3,191.70x = 10,146,655.51
  5. Step 5: Solve for x
    x = 10,146,655.51/3,191.70
  6. Step 6: Final answer
    x = 3,179.08

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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.