Home / 2,965.20-4,091.40-2,079.60

Finding the Fourth Proportional to 2,965.20, 4,091.40 and 2,079.60

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Solution

The fourth proportional to 2,965.20, 4,091.40 and 2,079.60 is: 2,869.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.20 : 4,091.40 = 2,079.60 : x
  2. Step 2: Convert to fraction form
    2,965.20/4,091.40 = 2,079.60/x
  3. Step 3: Cross multiply
    2,965.20x = 4,091.40 × 2,079.60
  4. Step 4: Simplify right side
    2,965.20x = 8,508,475.44
  5. Step 5: Solve for x
    x = 8,508,475.44/2,965.20
  6. Step 6: Final answer
    x = 2,869.44

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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.