Home / 3,933.68-5,423.46-2,990.48

Finding the Fourth Proportional to 3,933.68, 5,423.46 and 2,990.48

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Solution

The fourth proportional to 3,933.68, 5,423.46 and 2,990.48 is: 4,123.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.68 : 5,423.46 = 2,990.48 : x
  2. Step 2: Convert to fraction form
    3,933.68/5,423.46 = 2,990.48/x
  3. Step 3: Cross multiply
    3,933.68x = 5,423.46 × 2,990.48
  4. Step 4: Simplify right side
    3,933.68x = 16,218,748.66
  5. Step 5: Solve for x
    x = 16,218,748.66/3,933.68
  6. Step 6: Final answer
    x = 4,123.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.