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Finding the Fourth Proportional to 7,699.72, 11,548.62 and 3,079.24

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Solution

The fourth proportional to 7,699.72, 11,548.62 and 3,079.24 is: 4,618.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,699.72 : 11,548.62 = 3,079.24 : x
  2. Step 2: Convert to fraction form
    7,699.72/11,548.62 = 3,079.24/x
  3. Step 3: Cross multiply
    7,699.72x = 11,548.62 × 3,079.24
  4. Step 4: Simplify right side
    7,699.72x = 35,560,972.65
  5. Step 5: Solve for x
    x = 35,560,972.65/7,699.72
  6. Step 6: Final answer
    x = 4,618.48

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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.