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Finding the Fourth Proportional to 8,749.44, 12,081.78 and 7,502.85

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Solution

The fourth proportional to 8,749.44, 12,081.78 and 7,502.85 is: 10,360.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.44 : 12,081.78 = 7,502.85 : x
  2. Step 2: Convert to fraction form
    8,749.44/12,081.78 = 7,502.85/x
  3. Step 3: Cross multiply
    8,749.44x = 12,081.78 × 7,502.85
  4. Step 4: Simplify right side
    8,749.44x = 90,647,783.07
  5. Step 5: Solve for x
    x = 90,647,783.07/8,749.44
  6. Step 6: Final answer
    x = 10,360.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.