Home / 4,145.25-5,721.65-3,311.76

Finding the Fourth Proportional to 4,145.25, 5,721.65 and 3,311.76

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Solution

The fourth proportional to 4,145.25, 5,721.65 and 3,311.76 is: 4,571.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.25 : 5,721.65 = 3,311.76 : x
  2. Step 2: Convert to fraction form
    4,145.25/5,721.65 = 3,311.76/x
  3. Step 3: Cross multiply
    4,145.25x = 5,721.65 × 3,311.76
  4. Step 4: Simplify right side
    4,145.25x = 18,948,731.60
  5. Step 5: Solve for x
    x = 18,948,731.60/4,145.25
  6. Step 6: Final answer
    x = 4,571.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.