Home / 2,799.60-3,862.96-1,620.46

Finding the Fourth Proportional to 2,799.60, 3,862.96 and 1,620.46

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Solution

The fourth proportional to 2,799.60, 3,862.96 and 1,620.46 is: 2,235.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.60 : 3,862.96 = 1,620.46 : x
  2. Step 2: Convert to fraction form
    2,799.60/3,862.96 = 1,620.46/x
  3. Step 3: Cross multiply
    2,799.60x = 3,862.96 × 1,620.46
  4. Step 4: Simplify right side
    2,799.60x = 6,259,772.16
  5. Step 5: Solve for x
    x = 6,259,772.16/2,799.60
  6. Step 6: Final answer
    x = 2,235.95

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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.