Home / 5,163.14-7,124.88-2,805.20

Finding the Fourth Proportional to 5,163.14, 7,124.88 and 2,805.20

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Solution

The fourth proportional to 5,163.14, 7,124.88 and 2,805.20 is: 3,871.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.14 : 7,124.88 = 2,805.20 : x
  2. Step 2: Convert to fraction form
    5,163.14/7,124.88 = 2,805.20/x
  3. Step 3: Cross multiply
    5,163.14x = 7,124.88 × 2,805.20
  4. Step 4: Simplify right side
    5,163.14x = 19,986,713.38
  5. Step 5: Solve for x
    x = 19,986,713.38/5,163.14
  6. Step 6: Final answer
    x = 3,871.04

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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.