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Finding the Fourth Proportional to 7,757.55, 11,640.38 and 7,339.32

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Solution

The fourth proportional to 7,757.55, 11,640.38 and 7,339.32 is: 11,012.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,757.55 : 11,640.38 = 7,339.32 : x
  2. Step 2: Convert to fraction form
    7,757.55/11,640.38 = 7,339.32/x
  3. Step 3: Cross multiply
    7,757.55x = 11,640.38 × 7,339.32
  4. Step 4: Simplify right side
    7,757.55x = 85,432,437.05
  5. Step 5: Solve for x
    x = 85,432,437.05/7,757.55
  6. Step 6: Final answer
    x = 11,012.81

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1.5x scale

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.