Home / 2,221.28-3,066.92-1,382.36

Finding the Fourth Proportional to 2,221.28, 3,066.92 and 1,382.36

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Solution

The fourth proportional to 2,221.28, 3,066.92 and 1,382.36 is: 1,908.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.28 : 3,066.92 = 1,382.36 : x
  2. Step 2: Convert to fraction form
    2,221.28/3,066.92 = 1,382.36/x
  3. Step 3: Cross multiply
    2,221.28x = 3,066.92 × 1,382.36
  4. Step 4: Simplify right side
    2,221.28x = 4,239,587.53
  5. Step 5: Solve for x
    x = 4,239,587.53/2,221.28
  6. Step 6: Final answer
    x = 1,908.62

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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.