Home / 3,778.29-5,666.54-1,438.61

Finding the Fourth Proportional to 3,778.29, 5,666.54 and 1,438.61

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Solution

The fourth proportional to 3,778.29, 5,666.54 and 1,438.61 is: 2,157.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.29 : 5,666.54 = 1,438.61 : x
  2. Step 2: Convert to fraction form
    3,778.29/5,666.54 = 1,438.61/x
  3. Step 3: Cross multiply
    3,778.29x = 5,666.54 × 1,438.61
  4. Step 4: Simplify right side
    3,778.29x = 8,151,905.58
  5. Step 5: Solve for x
    x = 8,151,905.58/3,778.29
  6. Step 6: Final answer
    x = 2,157.56

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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.