Home / 1,401.75-2,100.60-579.60

Finding the Fourth Proportional to 1,401.75, 2,100.60 and 579.60

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Solution

The fourth proportional to 1,401.75, 2,100.60 and 579.60 is: 868.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.75 : 2,100.60 = 579.60 : x
  2. Step 2: Convert to fraction form
    1,401.75/2,100.60 = 579.60/x
  3. Step 3: Cross multiply
    1,401.75x = 2,100.60 × 579.60
  4. Step 4: Simplify right side
    1,401.75x = 1,217,507.76
  5. Step 5: Solve for x
    x = 1,217,507.76/1,401.75
  6. Step 6: Final answer
    x = 868.56

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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.