Home / 5,143.25-7,717.96-2,221.55

Finding the Fourth Proportional to 5,143.25, 7,717.96 and 2,221.55

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Solution

The fourth proportional to 5,143.25, 7,717.96 and 2,221.55 is: 3,333.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.25 : 7,717.96 = 2,221.55 : x
  2. Step 2: Convert to fraction form
    5,143.25/7,717.96 = 2,221.55/x
  3. Step 3: Cross multiply
    5,143.25x = 7,717.96 × 2,221.55
  4. Step 4: Simplify right side
    5,143.25x = 17,145,834.04
  5. Step 5: Solve for x
    x = 17,145,834.04/5,143.25
  6. Step 6: Final answer
    x = 3,333.66

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1.5x scale

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.