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Finding the Fourth Proportional to 6,689.39, 9,230.95 and 3,705.05

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Solution

The fourth proportional to 6,689.39, 9,230.95 and 3,705.05 is: 5,112.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.39 : 9,230.95 = 3,705.05 : x
  2. Step 2: Convert to fraction form
    6,689.39/9,230.95 = 3,705.05/x
  3. Step 3: Cross multiply
    6,689.39x = 9,230.95 × 3,705.05
  4. Step 4: Simplify right side
    6,689.39x = 34,201,066.62
  5. Step 5: Solve for x
    x = 34,201,066.62/6,689.39
  6. Step 6: Final answer
    x = 5,112.74

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