Home / 3,780.17-5,669.49-1,438.56

Finding the Fourth Proportional to 3,780.17, 5,669.49 and 1,438.56

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Solution

The fourth proportional to 3,780.17, 5,669.49 and 1,438.56 is: 2,157.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.17 : 5,669.49 = 1,438.56 : x
  2. Step 2: Convert to fraction form
    3,780.17/5,669.49 = 1,438.56/x
  3. Step 3: Cross multiply
    3,780.17x = 5,669.49 × 1,438.56
  4. Step 4: Simplify right side
    3,780.17x = 8,155,906.93
  5. Step 5: Solve for x
    x = 8,155,906.93/3,780.17
  6. Step 6: Final answer
    x = 2,157.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.