Home / 5,231.91-7,220.09-2,874.11

Finding the Fourth Proportional to 5,231.91, 7,220.09 and 2,874.11

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Solution

The fourth proportional to 5,231.91, 7,220.09 and 2,874.11 is: 3,966.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.91 : 7,220.09 = 2,874.11 : x
  2. Step 2: Convert to fraction form
    5,231.91/7,220.09 = 2,874.11/x
  3. Step 3: Cross multiply
    5,231.91x = 7,220.09 × 2,874.11
  4. Step 4: Simplify right side
    5,231.91x = 20,751,282.40
  5. Step 5: Solve for x
    x = 20,751,282.40/5,231.91
  6. Step 6: Final answer
    x = 3,966.29

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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.