Home / 1,401.70-2,102.55-579.55

Finding the Fourth Proportional to 1,401.70, 2,102.55 and 579.55

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Solution

The fourth proportional to 1,401.70, 2,102.55 and 579.55 is: 869.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.70 : 2,102.55 = 579.55 : x
  2. Step 2: Convert to fraction form
    1,401.70/2,102.55 = 579.55/x
  3. Step 3: Cross multiply
    1,401.70x = 2,102.55 × 579.55
  4. Step 4: Simplify right side
    1,401.70x = 1,218,532.85
  5. Step 5: Solve for x
    x = 1,218,532.85/1,401.70
  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.