Home / 1,401.50-2,102.25-579.56

Finding the Fourth Proportional to 1,401.50, 2,102.25 and 579.56

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Solution

The fourth proportional to 1,401.50, 2,102.25 and 579.56 is: 869.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.50 : 2,102.25 = 579.56 : x
  2. Step 2: Convert to fraction form
    1,401.50/2,102.25 = 579.56/x
  3. Step 3: Cross multiply
    1,401.50x = 2,102.25 × 579.56
  4. Step 4: Simplify right side
    1,401.50x = 1,218,371.67
  5. Step 5: Solve for x
    x = 1,218,371.67/1,401.50
  6. Step 6: Final answer
    x = 869.33

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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.