Home / 5,163.31-7,125.33-2,805.43

Finding the Fourth Proportional to 5,163.31, 7,125.33 and 2,805.43

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Solution

The fourth proportional to 5,163.31, 7,125.33 and 2,805.43 is: 3,871.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.31 : 7,125.33 = 2,805.43 : x
  2. Step 2: Convert to fraction form
    5,163.31/7,125.33 = 2,805.43/x
  3. Step 3: Cross multiply
    5,163.31x = 7,125.33 × 2,805.43
  4. Step 4: Simplify right side
    5,163.31x = 19,989,614.54
  5. Step 5: Solve for x
    x = 19,989,614.54/5,163.31
  6. Step 6: Final answer
    x = 3,871.47

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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.