Home / 3,122.64-4,687.33-2,778.18

Finding the Fourth Proportional to 3,122.64, 4,687.33 and 2,778.18

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Solution

The fourth proportional to 3,122.64, 4,687.33 and 2,778.18 is: 4,170.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.64 : 4,687.33 = 2,778.18 : x
  2. Step 2: Convert to fraction form
    3,122.64/4,687.33 = 2,778.18/x
  3. Step 3: Cross multiply
    3,122.64x = 4,687.33 × 2,778.18
  4. Step 4: Simplify right side
    3,122.64x = 13,022,246.46
  5. Step 5: Solve for x
    x = 13,022,246.46/3,122.64
  6. Step 6: Final answer
    x = 4,170.27

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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.