Home / 1,401.50-2,102.20-579.17

Finding the Fourth Proportional to 1,401.50, 2,102.20 and 579.17

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Solution

The fourth proportional to 1,401.50, 2,102.20 and 579.17 is: 868.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.50 : 2,102.20 = 579.17 : x
  2. Step 2: Convert to fraction form
    1,401.50/2,102.20 = 579.17/x
  3. Step 3: Cross multiply
    1,401.50x = 2,102.20 × 579.17
  4. Step 4: Simplify right side
    1,401.50x = 1,217,534.98
  5. Step 5: Solve for x
    x = 1,217,534.98/1,401.50
  6. Step 6: Final answer
    x = 868.74

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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.