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Finding the Fourth Proportional to 2,209.01, 3,313.71 and 748.17

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Solution

The fourth proportional to 2,209.01, 3,313.71 and 748.17 is: 1,122.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.01 : 3,313.71 = 748.17 : x
  2. Step 2: Convert to fraction form
    2,209.01/3,313.71 = 748.17/x
  3. Step 3: Cross multiply
    2,209.01x = 3,313.71 × 748.17
  4. Step 4: Simplify right side
    2,209.01x = 2,479,218.41
  5. Step 5: Solve for x
    x = 2,479,218.41/2,209.01
  6. Step 6: Final answer
    x = 1,122.32

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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.