Home / 3,869.70-5,340.24-2,277.42

Finding the Fourth Proportional to 3,869.70, 5,340.24 and 2,277.42

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Solution

The fourth proportional to 3,869.70, 5,340.24 and 2,277.42 is: 3,142.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.70 : 5,340.24 = 2,277.42 : x
  2. Step 2: Convert to fraction form
    3,869.70/5,340.24 = 2,277.42/x
  3. Step 3: Cross multiply
    3,869.70x = 5,340.24 × 2,277.42
  4. Step 4: Simplify right side
    3,869.70x = 12,161,969.38
  5. Step 5: Solve for x
    x = 12,161,969.38/3,869.70
  6. Step 6: Final answer
    x = 3,142.87

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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.