Home / 6,820.27-10,231.80-2,140.09

Finding the Fourth Proportional to 6,820.27, 10,231.80 and 2,140.09

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Solution

The fourth proportional to 6,820.27, 10,231.80 and 2,140.09 is: 3,210.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,820.27 : 10,231.80 = 2,140.09 : x
  2. Step 2: Convert to fraction form
    6,820.27/10,231.80 = 2,140.09/x
  3. Step 3: Cross multiply
    6,820.27x = 10,231.80 × 2,140.09
  4. Step 4: Simplify right side
    6,820.27x = 21,896,972.86
  5. Step 5: Solve for x
    x = 21,896,972.86/6,820.27
  6. Step 6: Final answer
    x = 3,210.57

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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.