Home / 3,780.97-5,671.52-1,315.87

Finding the Fourth Proportional to 3,780.97, 5,671.52 and 1,315.87

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Solution

The fourth proportional to 3,780.97, 5,671.52 and 1,315.87 is: 1,973.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.97 : 5,671.52 = 1,315.87 : x
  2. Step 2: Convert to fraction form
    3,780.97/5,671.52 = 1,315.87/x
  3. Step 3: Cross multiply
    3,780.97x = 5,671.52 × 1,315.87
  4. Step 4: Simplify right side
    3,780.97x = 7,462,983.02
  5. Step 5: Solve for x
    x = 7,462,983.02/3,780.97
  6. Step 6: Final answer
    x = 1,973.83

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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.