Home / 1,401.25-2,100.45-579.97

Finding the Fourth Proportional to 1,401.25, 2,100.45 and 579.97

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Solution

The fourth proportional to 1,401.25, 2,100.45 and 579.97 is: 869.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.25 : 2,100.45 = 579.97 : x
  2. Step 2: Convert to fraction form
    1,401.25/2,100.45 = 579.97/x
  3. Step 3: Cross multiply
    1,401.25x = 2,100.45 × 579.97
  4. Step 4: Simplify right side
    1,401.25x = 1,218,197.99
  5. Step 5: Solve for x
    x = 1,218,197.99/1,401.25
  6. Step 6: Final answer
    x = 869.37

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.