Home / 3,781.98-5,666.67-1,315.44

Finding the Fourth Proportional to 3,781.98, 5,666.67 and 1,315.44

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Solution

The fourth proportional to 3,781.98, 5,666.67 and 1,315.44 is: 1,970.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.98 : 5,666.67 = 1,315.44 : x
  2. Step 2: Convert to fraction form
    3,781.98/5,666.67 = 1,315.44/x
  3. Step 3: Cross multiply
    3,781.98x = 5,666.67 × 1,315.44
  4. Step 4: Simplify right side
    3,781.98x = 7,454,164.38
  5. Step 5: Solve for x
    x = 7,454,164.38/3,781.98
  6. Step 6: Final answer
    x = 1,970.97

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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.