Home / 2,649.86-3,972.14-1,329.58

Finding the Fourth Proportional to 2,649.86, 3,972.14 and 1,329.58

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Solution

The fourth proportional to 2,649.86, 3,972.14 and 1,329.58 is: 1,993.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.86 : 3,972.14 = 1,329.58 : x
  2. Step 2: Convert to fraction form
    2,649.86/3,972.14 = 1,329.58/x
  3. Step 3: Cross multiply
    2,649.86x = 3,972.14 × 1,329.58
  4. Step 4: Simplify right side
    2,649.86x = 5,281,277.90
  5. Step 5: Solve for x
    x = 5,281,277.90/2,649.86
  6. Step 6: Final answer
    x = 1,993.04

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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.