Home / 3,902.15-5,385.06-2,133.89

Finding the Fourth Proportional to 3,902.15, 5,385.06 and 2,133.89

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Solution

The fourth proportional to 3,902.15, 5,385.06 and 2,133.89 is: 2,944.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.15 : 5,385.06 = 2,133.89 : x
  2. Step 2: Convert to fraction form
    3,902.15/5,385.06 = 2,133.89/x
  3. Step 3: Cross multiply
    3,902.15x = 5,385.06 × 2,133.89
  4. Step 4: Simplify right side
    3,902.15x = 11,491,088.09
  5. Step 5: Solve for x
    x = 11,491,088.09/3,902.15
  6. Step 6: Final answer
    x = 2,944.81

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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.