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Finding the Fourth Proportional to 6,613.95, 9,922.40 and 2,231.31

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Solution

The fourth proportional to 6,613.95, 9,922.40 and 2,231.31 is: 3,347.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.95 : 9,922.40 = 2,231.31 : x
  2. Step 2: Convert to fraction form
    6,613.95/9,922.40 = 2,231.31/x
  3. Step 3: Cross multiply
    6,613.95x = 9,922.40 × 2,231.31
  4. Step 4: Simplify right side
    6,613.95x = 22,139,984.76
  5. Step 5: Solve for x
    x = 22,139,984.76/6,613.95
  6. Step 6: Final answer
    x = 3,347.47

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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.