Home / 5,456.55-8,185.27-1,945.20

Finding the Fourth Proportional to 5,456.55, 8,185.27 and 1,945.20

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Solution

The fourth proportional to 5,456.55, 8,185.27 and 1,945.20 is: 2,917.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.55 : 8,185.27 = 1,945.20 : x
  2. Step 2: Convert to fraction form
    5,456.55/8,185.27 = 1,945.20/x
  3. Step 3: Cross multiply
    5,456.55x = 8,185.27 × 1,945.20
  4. Step 4: Simplify right side
    5,456.55x = 15,921,987.20
  5. Step 5: Solve for x
    x = 15,921,987.20/5,456.55
  6. Step 6: Final answer
    x = 2,917.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.