Home / 2,799.20-3,862.65-1,620.33

Finding the Fourth Proportional to 2,799.20, 3,862.65 and 1,620.33

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Solution

The fourth proportional to 2,799.20, 3,862.65 and 1,620.33 is: 2,235.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.20 : 3,862.65 = 1,620.33 : x
  2. Step 2: Convert to fraction form
    2,799.20/3,862.65 = 1,620.33/x
  3. Step 3: Cross multiply
    2,799.20x = 3,862.65 × 1,620.33
  4. Step 4: Simplify right side
    2,799.20x = 6,258,767.67
  5. Step 5: Solve for x
    x = 6,258,767.67/2,799.20
  6. Step 6: Final answer
    x = 2,235.92

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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.