Home / 2,799.20-4,197.42-949.70

Finding the Fourth Proportional to 2,799.20, 4,197.42 and 949.70

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Solution

The fourth proportional to 2,799.20, 4,197.42 and 949.70 is: 1,424.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.20 : 4,197.42 = 949.70 : x
  2. Step 2: Convert to fraction form
    2,799.20/4,197.42 = 949.70/x
  3. Step 3: Cross multiply
    2,799.20x = 4,197.42 × 949.70
  4. Step 4: Simplify right side
    2,799.20x = 3,986,289.77
  5. Step 5: Solve for x
    x = 3,986,289.77/2,799.20
  6. Step 6: Final answer
    x = 1,424.08

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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.