Home / 2,012.60-2,772.19-1,422.11

Finding the Fourth Proportional to 2,012.60, 2,772.19 and 1,422.11

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Solution

The fourth proportional to 2,012.60, 2,772.19 and 1,422.11 is: 1,958.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.60 : 2,772.19 = 1,422.11 : x
  2. Step 2: Convert to fraction form
    2,012.60/2,772.19 = 1,422.11/x
  3. Step 3: Cross multiply
    2,012.60x = 2,772.19 × 1,422.11
  4. Step 4: Simplify right side
    2,012.60x = 3,942,359.12
  5. Step 5: Solve for x
    x = 3,942,359.12/2,012.60
  6. Step 6: Final answer
    x = 1,958.84

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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.