Home / 7,189.93-10,781.23-3,290.99

Finding the Fourth Proportional to 7,189.93, 10,781.23 and 3,290.99

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Solution

The fourth proportional to 7,189.93, 10,781.23 and 3,290.99 is: 4,934.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.93 : 10,781.23 = 3,290.99 : x
  2. Step 2: Convert to fraction form
    7,189.93/10,781.23 = 3,290.99/x
  3. Step 3: Cross multiply
    7,189.93x = 10,781.23 × 3,290.99
  4. Step 4: Simplify right side
    7,189.93x = 35,480,920.12
  5. Step 5: Solve for x
    x = 35,480,920.12/7,189.93
  6. Step 6: Final answer
    x = 4,934.81

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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.