Home / 5,163.39-7,125.30-2,805.48

Finding the Fourth Proportional to 5,163.39, 7,125.30 and 2,805.48

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Solution

The fourth proportional to 5,163.39, 7,125.30 and 2,805.48 is: 3,871.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.39 : 7,125.30 = 2,805.48 : x
  2. Step 2: Convert to fraction form
    5,163.39/7,125.30 = 2,805.48/x
  3. Step 3: Cross multiply
    5,163.39x = 7,125.30 × 2,805.48
  4. Step 4: Simplify right side
    5,163.39x = 19,989,886.64
  5. Step 5: Solve for x
    x = 19,989,886.64/5,163.39
  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.