Home / 2,981.05-4,472.31-1,338.75

Finding the Fourth Proportional to 2,981.05, 4,472.31 and 1,338.75

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Solution

The fourth proportional to 2,981.05, 4,472.31 and 1,338.75 is: 2,008.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.05 : 4,472.31 = 1,338.75 : x
  2. Step 2: Convert to fraction form
    2,981.05/4,472.31 = 1,338.75/x
  3. Step 3: Cross multiply
    2,981.05x = 4,472.31 × 1,338.75
  4. Step 4: Simplify right side
    2,981.05x = 5,987,305.01
  5. Step 5: Solve for x
    x = 5,987,305.01/2,981.05
  6. Step 6: Final answer
    x = 2,008.46

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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.