Home / 1,660.72-2,491.05-1,402.38

Finding the Fourth Proportional to 1,660.72, 2,491.05 and 1,402.38

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Solution

The fourth proportional to 1,660.72, 2,491.05 and 1,402.38 is: 2,103.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.72 : 2,491.05 = 1,402.38 : x
  2. Step 2: Convert to fraction form
    1,660.72/2,491.05 = 1,402.38/x
  3. Step 3: Cross multiply
    1,660.72x = 2,491.05 × 1,402.38
  4. Step 4: Simplify right side
    1,660.72x = 3,493,398.70
  5. Step 5: Solve for x
    x = 3,493,398.70/1,660.72
  6. Step 6: Final answer
    x = 2,103.54

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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.