Home / 2,265.20-3,126-1,321.04

Finding the Fourth Proportional to 2,265.20, 3,126 and 1,321.04

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Solution

The fourth proportional to 2,265.20, 3,126 and 1,321.04 is: 1,823.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.20 : 3,126 = 1,321.04 : x
  2. Step 2: Convert to fraction form
    2,265.20/3,126 = 1,321.04/x
  3. Step 3: Cross multiply
    2,265.20x = 3,126 × 1,321.04
  4. Step 4: Simplify right side
    2,265.20x = 4,129,571.04
  5. Step 5: Solve for x
    x = 4,129,571.04/2,265.20
  6. Step 6: Final answer
    x = 1,823.05

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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.