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Finding the Fourth Proportional to 7,125.78, 10,661.94 and 6,750.75

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Solution

The fourth proportional to 7,125.78, 10,661.94 and 6,750.75 is: 10,100.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.78 : 10,661.94 = 6,750.75 : x
  2. Step 2: Convert to fraction form
    7,125.78/10,661.94 = 6,750.75/x
  3. Step 3: Cross multiply
    7,125.78x = 10,661.94 × 6,750.75
  4. Step 4: Simplify right side
    7,125.78x = 71,976,091.46
  5. Step 5: Solve for x
    x = 71,976,091.46/7,125.78
  6. Step 6: Final answer
    x = 10,100.80

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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.