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Finding the Fourth Proportional to 6,806.80, 10,210.90 and 2,126.02

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Solution

The fourth proportional to 6,806.80, 10,210.90 and 2,126.02 is: 3,189.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,806.80 : 10,210.90 = 2,126.02 : x
  2. Step 2: Convert to fraction form
    6,806.80/10,210.90 = 2,126.02/x
  3. Step 3: Cross multiply
    6,806.80x = 10,210.90 × 2,126.02
  4. Step 4: Simplify right side
    6,806.80x = 21,708,577.62
  5. Step 5: Solve for x
    x = 21,708,577.62/6,806.80
  6. Step 6: Final answer
    x = 3,189.25

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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.