Home / 3,902.11-5,385.28-2,133.98

Finding the Fourth Proportional to 3,902.11, 5,385.28 and 2,133.98

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Solution

The fourth proportional to 3,902.11, 5,385.28 and 2,133.98 is: 2,945.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.11 : 5,385.28 = 2,133.98 : x
  2. Step 2: Convert to fraction form
    3,902.11/5,385.28 = 2,133.98/x
  3. Step 3: Cross multiply
    3,902.11x = 5,385.28 × 2,133.98
  4. Step 4: Simplify right side
    3,902.11x = 11,492,047.55
  5. Step 5: Solve for x
    x = 11,492,047.55/3,902.11
  6. Step 6: Final answer
    x = 2,945.09

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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.