Home / 3,902.74-5,385.73-2,134.30

Finding the Fourth Proportional to 3,902.74, 5,385.73 and 2,134.30

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Solution

The fourth proportional to 3,902.74, 5,385.73 and 2,134.30 is: 2,945.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.74 : 5,385.73 = 2,134.30 : x
  2. Step 2: Convert to fraction form
    3,902.74/5,385.73 = 2,134.30/x
  3. Step 3: Cross multiply
    3,902.74x = 5,385.73 × 2,134.30
  4. Step 4: Simplify right side
    3,902.74x = 11,494,763.54
  5. Step 5: Solve for x
    x = 11,494,763.54/3,902.74
  6. Step 6: Final answer
    x = 2,945.31

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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.