Home / 7,321.69-10,988.66-3,812.91

Finding the Fourth Proportional to 7,321.69, 10,988.66 and 3,812.91

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Solution

The fourth proportional to 7,321.69, 10,988.66 and 3,812.91 is: 5,722.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.69 : 10,988.66 = 3,812.91 : x
  2. Step 2: Convert to fraction form
    7,321.69/10,988.66 = 3,812.91/x
  3. Step 3: Cross multiply
    7,321.69x = 10,988.66 × 3,812.91
  4. Step 4: Simplify right side
    7,321.69x = 41,898,739.93
  5. Step 5: Solve for x
    x = 41,898,739.93/7,321.69
  6. Step 6: Final answer
    x = 5,722.55

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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.