Home / 1,942.28-2,680.50-1,631.24

Finding the Fourth Proportional to 1,942.28, 2,680.50 and 1,631.24

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Solution

The fourth proportional to 1,942.28, 2,680.50 and 1,631.24 is: 2,251.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.28 : 2,680.50 = 1,631.24 : x
  2. Step 2: Convert to fraction form
    1,942.28/2,680.50 = 1,631.24/x
  3. Step 3: Cross multiply
    1,942.28x = 2,680.50 × 1,631.24
  4. Step 4: Simplify right side
    1,942.28x = 4,372,538.82
  5. Step 5: Solve for x
    x = 4,372,538.82/1,942.28
  6. Step 6: Final answer
    x = 2,251.24

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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.