Home / 2,209.18-3,313.68-748.33

Finding the Fourth Proportional to 2,209.18, 3,313.68 and 748.33

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Solution

The fourth proportional to 2,209.18, 3,313.68 and 748.33 is: 1,122.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.18 : 3,313.68 = 748.33 : x
  2. Step 2: Convert to fraction form
    2,209.18/3,313.68 = 748.33/x
  3. Step 3: Cross multiply
    2,209.18x = 3,313.68 × 748.33
  4. Step 4: Simplify right side
    2,209.18x = 2,479,726.15
  5. Step 5: Solve for x
    x = 2,479,726.15/2,209.18
  6. Step 6: Final answer
    x = 1,122.46

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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.