Home / 2,478.11-3,715.99-1,438.43

Finding the Fourth Proportional to 2,478.11, 3,715.99 and 1,438.43

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Solution

The fourth proportional to 2,478.11, 3,715.99 and 1,438.43 is: 2,156.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.11 : 3,715.99 = 1,438.43 : x
  2. Step 2: Convert to fraction form
    2,478.11/3,715.99 = 1,438.43/x
  3. Step 3: Cross multiply
    2,478.11x = 3,715.99 × 1,438.43
  4. Step 4: Simplify right side
    2,478.11x = 5,345,202.70
  5. Step 5: Solve for x
    x = 5,345,202.70/2,478.11
  6. Step 6: Final answer
    x = 2,156.97

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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.