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Finding the Fourth Proportional to 3,789.56, 5,223.21 and 2,903.42

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Solution

The fourth proportional to 3,789.56, 5,223.21 and 2,903.42 is: 4,001.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.56 : 5,223.21 = 2,903.42 : x
  2. Step 2: Convert to fraction form
    3,789.56/5,223.21 = 2,903.42/x
  3. Step 3: Cross multiply
    3,789.56x = 5,223.21 × 2,903.42
  4. Step 4: Simplify right side
    3,789.56x = 15,165,172.38
  5. Step 5: Solve for x
    x = 15,165,172.38/3,789.56
  6. Step 6: Final answer
    x = 4,001.83

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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.