Home / 5,211.92-7,192.68-2,854.10

Finding the Fourth Proportional to 5,211.92, 7,192.68 and 2,854.10

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Solution

The fourth proportional to 5,211.92, 7,192.68 and 2,854.10 is: 3,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.92 : 7,192.68 = 2,854.10 : x
  2. Step 2: Convert to fraction form
    5,211.92/7,192.68 = 2,854.10/x
  3. Step 3: Cross multiply
    5,211.92x = 7,192.68 × 2,854.10
  4. Step 4: Simplify right side
    5,211.92x = 20,528,627.99
  5. Step 5: Solve for x
    x = 20,528,627.99/5,211.92
  6. Step 6: Final answer
    x = 3,938.78

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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.