Home / 6,820.04-10,229.30-2,139.86

Finding the Fourth Proportional to 6,820.04, 10,229.30 and 2,139.86

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Solution

The fourth proportional to 6,820.04, 10,229.30 and 2,139.86 is: 3,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,820.04 : 10,229.30 = 2,139.86 : x
  2. Step 2: Convert to fraction form
    6,820.04/10,229.30 = 2,139.86/x
  3. Step 3: Cross multiply
    6,820.04x = 10,229.30 × 2,139.86
  4. Step 4: Simplify right side
    6,820.04x = 21,889,269.90
  5. Step 5: Solve for x
    x = 21,889,269.90/6,820.04
  6. Step 6: Final answer
    x = 3,209.55

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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.