Home / 5,172.82-7,138.50-2,814.97

Finding the Fourth Proportional to 5,172.82, 7,138.50 and 2,814.97

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Solution

The fourth proportional to 5,172.82, 7,138.50 and 2,814.97 is: 3,884.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.82 : 7,138.50 = 2,814.97 : x
  2. Step 2: Convert to fraction form
    5,172.82/7,138.50 = 2,814.97/x
  3. Step 3: Cross multiply
    5,172.82x = 7,138.50 × 2,814.97
  4. Step 4: Simplify right side
    5,172.82x = 20,094,641.96
  5. Step 5: Solve for x
    x = 20,094,641.96/5,172.82
  6. Step 6: Final answer
    x = 3,884.66

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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.