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Finding the Fourth Proportional to 7,326.67, 10,110.80 and 3,969.50

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Solution

The fourth proportional to 7,326.67, 10,110.80 and 3,969.50 is: 5,477.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,326.67 : 10,110.80 = 3,969.50 : x
  2. Step 2: Convert to fraction form
    7,326.67/10,110.80 = 3,969.50/x
  3. Step 3: Cross multiply
    7,326.67x = 10,110.80 × 3,969.50
  4. Step 4: Simplify right side
    7,326.67x = 40,134,820.60
  5. Step 5: Solve for x
    x = 40,134,820.60/7,326.67
  6. Step 6: Final answer
    x = 5,477.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.