Home / 3,191.33-4,402.43-2,072.90

Finding the Fourth Proportional to 3,191.33, 4,402.43 and 2,072.90

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Solution

The fourth proportional to 3,191.33, 4,402.43 and 2,072.90 is: 2,859.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.33 : 4,402.43 = 2,072.90 : x
  2. Step 2: Convert to fraction form
    3,191.33/4,402.43 = 2,072.90/x
  3. Step 3: Cross multiply
    3,191.33x = 4,402.43 × 2,072.90
  4. Step 4: Simplify right side
    3,191.33x = 9,125,764.77
  5. Step 5: Solve for x
    x = 9,125,764.77/3,191.33
  6. Step 6: Final answer
    x = 2,859.55

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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.