Home / 7,680.51-11,520.23-5,099.31

Finding the Fourth Proportional to 7,680.51, 11,520.23 and 5,099.31

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Solution

The fourth proportional to 7,680.51, 11,520.23 and 5,099.31 is: 7,648.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.51 : 11,520.23 = 5,099.31 : x
  2. Step 2: Convert to fraction form
    7,680.51/11,520.23 = 5,099.31/x
  3. Step 3: Cross multiply
    7,680.51x = 11,520.23 × 5,099.31
  4. Step 4: Simplify right side
    7,680.51x = 58,745,198.54
  5. Step 5: Solve for x
    x = 58,745,198.54/7,680.51
  6. Step 6: Final answer
    x = 7,648.61

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Double scale
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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.