Home / 2,335.68-3,223.26-1,287.78

Finding the Fourth Proportional to 2,335.68, 3,223.26 and 1,287.78

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Solution

The fourth proportional to 2,335.68, 3,223.26 and 1,287.78 is: 1,777.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.68 : 3,223.26 = 1,287.78 : x
  2. Step 2: Convert to fraction form
    2,335.68/3,223.26 = 1,287.78/x
  3. Step 3: Cross multiply
    2,335.68x = 3,223.26 × 1,287.78
  4. Step 4: Simplify right side
    2,335.68x = 4,150,849.76
  5. Step 5: Solve for x
    x = 4,150,849.76/2,335.68
  6. Step 6: Final answer
    x = 1,777.15

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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.