Home / 2,634.60-3,947.10-2,221.80

Finding the Fourth Proportional to 2,634.60, 3,947.10 and 2,221.80

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Solution

The fourth proportional to 2,634.60, 3,947.10 and 2,221.80 is: 3,328.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,634.60 : 3,947.10 = 2,221.80 : x
  2. Step 2: Convert to fraction form
    2,634.60/3,947.10 = 2,221.80/x
  3. Step 3: Cross multiply
    2,634.60x = 3,947.10 × 2,221.80
  4. Step 4: Simplify right side
    2,634.60x = 8,769,666.78
  5. Step 5: Solve for x
    x = 8,769,666.78/2,634.60
  6. Step 6: Final answer
    x = 3,328.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.