Home / 2,157.28-2,976.60-1,371.04

Finding the Fourth Proportional to 2,157.28, 2,976.60 and 1,371.04

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Solution

The fourth proportional to 2,157.28, 2,976.60 and 1,371.04 is: 1,891.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.28 : 2,976.60 = 1,371.04 : x
  2. Step 2: Convert to fraction form
    2,157.28/2,976.60 = 1,371.04/x
  3. Step 3: Cross multiply
    2,157.28x = 2,976.60 × 1,371.04
  4. Step 4: Simplify right side
    2,157.28x = 4,081,037.66
  5. Step 5: Solve for x
    x = 4,081,037.66/2,157.28
  6. Step 6: Final answer
    x = 1,891.75

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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.