Home / 5,188.92-7,161.30-2,889.54

Finding the Fourth Proportional to 5,188.92, 7,161.30 and 2,889.54

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Solution

The fourth proportional to 5,188.92, 7,161.30 and 2,889.54 is: 3,987.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.92 : 7,161.30 = 2,889.54 : x
  2. Step 2: Convert to fraction form
    5,188.92/7,161.30 = 2,889.54/x
  3. Step 3: Cross multiply
    5,188.92x = 7,161.30 × 2,889.54
  4. Step 4: Simplify right side
    5,188.92x = 20,692,862.80
  5. Step 5: Solve for x
    x = 20,692,862.80/5,188.92
  6. Step 6: Final answer
    x = 3,987.89

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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.