Home / 1,401.09-2,101.05-579.15

Finding the Fourth Proportional to 1,401.09, 2,101.05 and 579.15

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Solution

The fourth proportional to 1,401.09, 2,101.05 and 579.15 is: 868.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.09 : 2,101.05 = 579.15 : x
  2. Step 2: Convert to fraction form
    1,401.09/2,101.05 = 579.15/x
  3. Step 3: Cross multiply
    1,401.09x = 2,101.05 × 579.15
  4. Step 4: Simplify right side
    1,401.09x = 1,216,823.11
  5. Step 5: Solve for x
    x = 1,216,823.11/1,401.09
  6. Step 6: Final answer
    x = 868.48

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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.