Home / 2,947.11-4,066.88-1,620.95

Finding the Fourth Proportional to 2,947.11, 4,066.88 and 1,620.95

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Solution

The fourth proportional to 2,947.11, 4,066.88 and 1,620.95 is: 2,236.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.11 : 4,066.88 = 1,620.95 : x
  2. Step 2: Convert to fraction form
    2,947.11/4,066.88 = 1,620.95/x
  3. Step 3: Cross multiply
    2,947.11x = 4,066.88 × 1,620.95
  4. Step 4: Simplify right side
    2,947.11x = 6,592,180.70
  5. Step 5: Solve for x
    x = 6,592,180.70/2,947.11
  6. Step 6: Final answer
    x = 2,236.83

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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.