Home / 1,817.46-2,508.15-1,020.78

Finding the Fourth Proportional to 1,817.46, 2,508.15 and 1,020.78

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Solution

The fourth proportional to 1,817.46, 2,508.15 and 1,020.78 is: 1,408.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.46 : 2,508.15 = 1,020.78 : x
  2. Step 2: Convert to fraction form
    1,817.46/2,508.15 = 1,020.78/x
  3. Step 3: Cross multiply
    1,817.46x = 2,508.15 × 1,020.78
  4. Step 4: Simplify right side
    1,817.46x = 2,560,269.36
  5. Step 5: Solve for x
    x = 2,560,269.36/1,817.46
  6. Step 6: Final answer
    x = 1,408.71

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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.