Home / 5,161.41-7,122.90-2,803.71

Finding the Fourth Proportional to 5,161.41, 7,122.90 and 2,803.71

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Solution

The fourth proportional to 5,161.41, 7,122.90 and 2,803.71 is: 3,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.41 : 7,122.90 = 2,803.71 : x
  2. Step 2: Convert to fraction form
    5,161.41/7,122.90 = 2,803.71/x
  3. Step 3: Cross multiply
    5,161.41x = 7,122.90 × 2,803.71
  4. Step 4: Simplify right side
    5,161.41x = 19,970,545.96
  5. Step 5: Solve for x
    x = 19,970,545.96/5,161.41
  6. Step 6: Final answer
    x = 3,869.20

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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.