Home / 3,902.70-5,385.75-2,134.29

Finding the Fourth Proportional to 3,902.70, 5,385.75 and 2,134.29

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Solution

The fourth proportional to 3,902.70, 5,385.75 and 2,134.29 is: 2,945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.70 : 5,385.75 = 2,134.29 : x
  2. Step 2: Convert to fraction form
    3,902.70/5,385.75 = 2,134.29/x
  3. Step 3: Cross multiply
    3,902.70x = 5,385.75 × 2,134.29
  4. Step 4: Simplify right side
    3,902.70x = 11,494,752.37
  5. Step 5: Solve for x
    x = 11,494,752.37/3,902.70
  6. Step 6: Final answer
    x = 2,945.33

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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.