Home / 2,748.91-4,123.37-668.90

Finding the Fourth Proportional to 2,748.91, 4,123.37 and 668.90

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Solution

The fourth proportional to 2,748.91, 4,123.37 and 668.90 is: 1,003.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.91 : 4,123.37 = 668.90 : x
  2. Step 2: Convert to fraction form
    2,748.91/4,123.37 = 668.90/x
  3. Step 3: Cross multiply
    2,748.91x = 4,123.37 × 668.90
  4. Step 4: Simplify right side
    2,748.91x = 2,758,139.97
  5. Step 5: Solve for x
    x = 2,758,139.97/2,748.91
  6. Step 6: Final answer
    x = 1,003.36

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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.