Home / 3,780.18-5,671.31-1,147.77

Finding the Fourth Proportional to 3,780.18, 5,671.31 and 1,147.77

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Solution

The fourth proportional to 3,780.18, 5,671.31 and 1,147.77 is: 1,721.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.18 : 5,671.31 = 1,147.77 : x
  2. Step 2: Convert to fraction form
    3,780.18/5,671.31 = 1,147.77/x
  3. Step 3: Cross multiply
    3,780.18x = 5,671.31 × 1,147.77
  4. Step 4: Simplify right side
    3,780.18x = 6,509,353.74
  5. Step 5: Solve for x
    x = 6,509,353.74/3,780.18
  6. Step 6: Final answer
    x = 1,721.97

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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.