Home / 5,189.96-7,162.13-2,921.11

Finding the Fourth Proportional to 5,189.96, 7,162.13 and 2,921.11

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Solution

The fourth proportional to 5,189.96, 7,162.13 and 2,921.11 is: 4,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.96 : 7,162.13 = 2,921.11 : x
  2. Step 2: Convert to fraction form
    5,189.96/7,162.13 = 2,921.11/x
  3. Step 3: Cross multiply
    5,189.96x = 7,162.13 × 2,921.11
  4. Step 4: Simplify right side
    5,189.96x = 20,921,380.17
  5. Step 5: Solve for x
    x = 20,921,380.17/5,189.96
  6. Step 6: Final answer
    x = 4,031.13

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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.