Home / 7,815.27-11,722.92-1,972.33

Finding the Fourth Proportional to 7,815.27, 11,722.92 and 1,972.33

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Solution

The fourth proportional to 7,815.27, 11,722.92 and 1,972.33 is: 2,958.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.27 : 11,722.92 = 1,972.33 : x
  2. Step 2: Convert to fraction form
    7,815.27/11,722.92 = 1,972.33/x
  3. Step 3: Cross multiply
    7,815.27x = 11,722.92 × 1,972.33
  4. Step 4: Simplify right side
    7,815.27x = 23,121,456.94
  5. Step 5: Solve for x
    x = 23,121,456.94/7,815.27
  6. Step 6: Final answer
    x = 2,958.50

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Double scale
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Similar ratio
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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.