Home / 2,371.28-3,556.92-911.12

Finding the Fourth Proportional to 2,371.28, 3,556.92 and 911.12

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Solution

The fourth proportional to 2,371.28, 3,556.92 and 911.12 is: 1,366.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,371.28 : 3,556.92 = 911.12 : x
  2. Step 2: Convert to fraction form
    2,371.28/3,556.92 = 911.12/x
  3. Step 3: Cross multiply
    2,371.28x = 3,556.92 × 911.12
  4. Step 4: Simplify right side
    2,371.28x = 3,240,780.95
  5. Step 5: Solve for x
    x = 3,240,780.95/2,371.28
  6. Step 6: Final answer
    x = 1,366.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.