Home / 2,669.28-4,003.08-1,281.92

Finding the Fourth Proportional to 2,669.28, 4,003.08 and 1,281.92

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Solution

The fourth proportional to 2,669.28, 4,003.08 and 1,281.92 is: 1,922.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.28 : 4,003.08 = 1,281.92 : x
  2. Step 2: Convert to fraction form
    2,669.28/4,003.08 = 1,281.92/x
  3. Step 3: Cross multiply
    2,669.28x = 4,003.08 × 1,281.92
  4. Step 4: Simplify right side
    2,669.28x = 5,131,628.31
  5. Step 5: Solve for x
    x = 5,131,628.31/2,669.28
  6. Step 6: Final answer
    x = 1,922.48

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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.