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Finding the Fourth Proportional to 2,799.20, 3,859.20 and 2,327.48

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Solution

The fourth proportional to 2,799.20, 3,859.20 and 2,327.48 is: 3,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.20 : 3,859.20 = 2,327.48 : x
  2. Step 2: Convert to fraction form
    2,799.20/3,859.20 = 2,327.48/x
  3. Step 3: Cross multiply
    2,799.20x = 3,859.20 × 2,327.48
  4. Step 4: Simplify right side
    2,799.20x = 8,982,210.82
  5. Step 5: Solve for x
    x = 8,982,210.82/2,799.20
  6. Step 6: Final answer
    x = 3,208.85

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1.5x scale

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.