Home / 3,821.72-5,273.66-2,142.89

Finding the Fourth Proportional to 3,821.72, 5,273.66 and 2,142.89

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Solution

The fourth proportional to 3,821.72, 5,273.66 and 2,142.89 is: 2,957.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.72 : 5,273.66 = 2,142.89 : x
  2. Step 2: Convert to fraction form
    3,821.72/5,273.66 = 2,142.89/x
  3. Step 3: Cross multiply
    3,821.72x = 5,273.66 × 2,142.89
  4. Step 4: Simplify right side
    3,821.72x = 11,300,875.75
  5. Step 5: Solve for x
    x = 11,300,875.75/3,821.72
  6. Step 6: Final answer
    x = 2,957.02

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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.