Home / 7,185.77-10,781.90-3,291.29

Finding the Fourth Proportional to 7,185.77, 10,781.90 and 3,291.29

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Solution

The fourth proportional to 7,185.77, 10,781.90 and 3,291.29 is: 4,938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,185.77 : 10,781.90 = 3,291.29 : x
  2. Step 2: Convert to fraction form
    7,185.77/10,781.90 = 3,291.29/x
  3. Step 3: Cross multiply
    7,185.77x = 10,781.90 × 3,291.29
  4. Step 4: Simplify right side
    7,185.77x = 35,486,359.65
  5. Step 5: Solve for x
    x = 35,486,359.65/7,185.77
  6. Step 6: Final answer
    x = 4,938.42

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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.