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Finding the Fourth Proportional to 7,131.80, 10,701.06 and 2,750.84

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Solution

The fourth proportional to 7,131.80, 10,701.06 and 2,750.84 is: 4,127.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.80 : 10,701.06 = 2,750.84 : x
  2. Step 2: Convert to fraction form
    7,131.80/10,701.06 = 2,750.84/x
  3. Step 3: Cross multiply
    7,131.80x = 10,701.06 × 2,750.84
  4. Step 4: Simplify right side
    7,131.80x = 29,436,903.89
  5. Step 5: Solve for x
    x = 29,436,903.89/7,131.80
  6. Step 6: Final answer
    x = 4,127.56

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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.