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Finding the Fourth Proportional to 7,127.68, 9,881.80 and 6,734.56

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Solution

The fourth proportional to 7,127.68, 9,881.80 and 6,734.56 is: 9,336.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.68 : 9,881.80 = 6,734.56 : x
  2. Step 2: Convert to fraction form
    7,127.68/9,881.80 = 6,734.56/x
  3. Step 3: Cross multiply
    7,127.68x = 9,881.80 × 6,734.56
  4. Step 4: Simplify right side
    7,127.68x = 66,549,575.01
  5. Step 5: Solve for x
    x = 66,549,575.01/7,127.68
  6. Step 6: Final answer
    x = 9,336.78

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These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.