Home / 1,805.34-2,491.30-1,008.70

Finding the Fourth Proportional to 1,805.34, 2,491.30 and 1,008.70

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Solution

The fourth proportional to 1,805.34, 2,491.30 and 1,008.70 is: 1,391.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.34 : 2,491.30 = 1,008.70 : x
  2. Step 2: Convert to fraction form
    1,805.34/2,491.30 = 1,008.70/x
  3. Step 3: Cross multiply
    1,805.34x = 2,491.30 × 1,008.70
  4. Step 4: Simplify right side
    1,805.34x = 2,512,974.31
  5. Step 5: Solve for x
    x = 2,512,974.31/1,805.34
  6. Step 6: Final answer
    x = 1,391.97

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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.