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Finding the Fourth Proportional to 2,047.74, 3,069.78 and 748.92

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Solution

The fourth proportional to 2,047.74, 3,069.78 and 748.92 is: 1,122.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,047.74 : 3,069.78 = 748.92 : x
  2. Step 2: Convert to fraction form
    2,047.74/3,069.78 = 748.92/x
  3. Step 3: Cross multiply
    2,047.74x = 3,069.78 × 748.92
  4. Step 4: Simplify right side
    2,047.74x = 2,299,019.64
  5. Step 5: Solve for x
    x = 2,299,019.64/2,047.74
  6. Step 6: Final answer
    x = 1,122.71

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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.