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Finding the Fourth Proportional to 7,812.54, 11,718.86 and 3,195.54

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Solution

The fourth proportional to 7,812.54, 11,718.86 and 3,195.54 is: 4,793.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.54 : 11,718.86 = 3,195.54 : x
  2. Step 2: Convert to fraction form
    7,812.54/11,718.86 = 3,195.54/x
  3. Step 3: Cross multiply
    7,812.54x = 11,718.86 × 3,195.54
  4. Step 4: Simplify right side
    7,812.54x = 37,448,069.91
  5. Step 5: Solve for x
    x = 37,448,069.91/7,812.54
  6. Step 6: Final answer
    x = 4,793.33

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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.