Home / 5,125.14-7,072.80-2,856.62

Finding the Fourth Proportional to 5,125.14, 7,072.80 and 2,856.62

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Solution

The fourth proportional to 5,125.14, 7,072.80 and 2,856.62 is: 3,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.14 : 7,072.80 = 2,856.62 : x
  2. Step 2: Convert to fraction form
    5,125.14/7,072.80 = 2,856.62/x
  3. Step 3: Cross multiply
    5,125.14x = 7,072.80 × 2,856.62
  4. Step 4: Simplify right side
    5,125.14x = 20,204,301.94
  5. Step 5: Solve for x
    x = 20,204,301.94/5,125.14
  6. Step 6: Final answer
    x = 3,942.20

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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.