Home / 5,121.24-7,683.66-2,931.80

Finding the Fourth Proportional to 5,121.24, 7,683.66 and 2,931.80

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Solution

The fourth proportional to 5,121.24, 7,683.66 and 2,931.80 is: 4,398.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.24 : 7,683.66 = 2,931.80 : x
  2. Step 2: Convert to fraction form
    5,121.24/7,683.66 = 2,931.80/x
  3. Step 3: Cross multiply
    5,121.24x = 7,683.66 × 2,931.80
  4. Step 4: Simplify right side
    5,121.24x = 22,526,954.39
  5. Step 5: Solve for x
    x = 22,526,954.39/5,121.24
  6. Step 6: Final answer
    x = 4,398.73

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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.