Home / 7,688.60-11,531.66-2,757.40

Finding the Fourth Proportional to 7,688.60, 11,531.66 and 2,757.40

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Solution

The fourth proportional to 7,688.60, 11,531.66 and 2,757.40 is: 4,135.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.60 : 11,531.66 = 2,757.40 : x
  2. Step 2: Convert to fraction form
    7,688.60/11,531.66 = 2,757.40/x
  3. Step 3: Cross multiply
    7,688.60x = 11,531.66 × 2,757.40
  4. Step 4: Simplify right side
    7,688.60x = 31,797,399.28
  5. Step 5: Solve for x
    x = 31,797,399.28/7,688.60
  6. Step 6: Final answer
    x = 4,135.66

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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.