Home / 5,163.30-7,125.48-2,805.59

Finding the Fourth Proportional to 5,163.30, 7,125.48 and 2,805.59

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Solution

The fourth proportional to 5,163.30, 7,125.48 and 2,805.59 is: 3,871.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.30 : 7,125.48 = 2,805.59 : x
  2. Step 2: Convert to fraction form
    5,163.30/7,125.48 = 2,805.59/x
  3. Step 3: Cross multiply
    5,163.30x = 7,125.48 × 2,805.59
  4. Step 4: Simplify right side
    5,163.30x = 19,991,139.81
  5. Step 5: Solve for x
    x = 19,991,139.81/5,163.30
  6. Step 6: Final answer
    x = 3,871.78

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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.