Home / 3,317.85-4,976.76-1,581.21

Finding the Fourth Proportional to 3,317.85, 4,976.76 and 1,581.21

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Solution

The fourth proportional to 3,317.85, 4,976.76 and 1,581.21 is: 2,371.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.85 : 4,976.76 = 1,581.21 : x
  2. Step 2: Convert to fraction form
    3,317.85/4,976.76 = 1,581.21/x
  3. Step 3: Cross multiply
    3,317.85x = 4,976.76 × 1,581.21
  4. Step 4: Simplify right side
    3,317.85x = 7,869,302.68
  5. Step 5: Solve for x
    x = 7,869,302.68/3,317.85
  6. Step 6: Final answer
    x = 2,371.81

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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.