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Finding the Fourth Proportional to 6,656.96, 9,986.66 and 2,761.68

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Solution

The fourth proportional to 6,656.96, 9,986.66 and 2,761.68 is: 4,143.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,656.96 : 9,986.66 = 2,761.68 : x
  2. Step 2: Convert to fraction form
    6,656.96/9,986.66 = 2,761.68/x
  3. Step 3: Cross multiply
    6,656.96x = 9,986.66 × 2,761.68
  4. Step 4: Simplify right side
    6,656.96x = 27,579,959.19
  5. Step 5: Solve for x
    x = 27,579,959.19/6,656.96
  6. Step 6: Final answer
    x = 4,143.03

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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.