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Finding the Fourth Proportional to 2,748.99, 4,123.49 and 668.97

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Solution

The fourth proportional to 2,748.99, 4,123.49 and 668.97 is: 1,003.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.99 : 4,123.49 = 668.97 : x
  2. Step 2: Convert to fraction form
    2,748.99/4,123.49 = 668.97/x
  3. Step 3: Cross multiply
    2,748.99x = 4,123.49 × 668.97
  4. Step 4: Simplify right side
    2,748.99x = 2,758,487.76
  5. Step 5: Solve for x
    x = 2,758,487.76/2,748.99
  6. Step 6: Final answer
    x = 1,003.46

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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.