Home / 1,677.38-2,515.73-581.78

Finding the Fourth Proportional to 1,677.38, 2,515.73 and 581.78

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Solution

The fourth proportional to 1,677.38, 2,515.73 and 581.78 is: 872.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.38 : 2,515.73 = 581.78 : x
  2. Step 2: Convert to fraction form
    1,677.38/2,515.73 = 581.78/x
  3. Step 3: Cross multiply
    1,677.38x = 2,515.73 × 581.78
  4. Step 4: Simplify right side
    1,677.38x = 1,463,604.78
  5. Step 5: Solve for x
    x = 1,463,604.78/1,677.38
  6. Step 6: Final answer
    x = 872.56

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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.