Home / 3,381.45-4,665.15-2,122.56

Finding the Fourth Proportional to 3,381.45, 4,665.15 and 2,122.56

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Solution

The fourth proportional to 3,381.45, 4,665.15 and 2,122.56 is: 2,928.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.45 : 4,665.15 = 2,122.56 : x
  2. Step 2: Convert to fraction form
    3,381.45/4,665.15 = 2,122.56/x
  3. Step 3: Cross multiply
    3,381.45x = 4,665.15 × 2,122.56
  4. Step 4: Simplify right side
    3,381.45x = 9,902,060.78
  5. Step 5: Solve for x
    x = 9,902,060.78/3,381.45
  6. Step 6: Final answer
    x = 2,928.35

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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.