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Finding the Fourth Proportional to 7,243.80, 10,866.51 and 2,625.72

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Solution

The fourth proportional to 7,243.80, 10,866.51 and 2,625.72 is: 3,938.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.80 : 10,866.51 = 2,625.72 : x
  2. Step 2: Convert to fraction form
    7,243.80/10,866.51 = 2,625.72/x
  3. Step 3: Cross multiply
    7,243.80x = 10,866.51 × 2,625.72
  4. Step 4: Simplify right side
    7,243.80x = 28,532,412.64
  5. Step 5: Solve for x
    x = 28,532,412.64/7,243.80
  6. Step 6: Final answer
    x = 3,938.87

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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.