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Finding the Fourth Proportional to 8,648.72, 11,939.64 and 6,756.92

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Solution

The fourth proportional to 8,648.72, 11,939.64 and 6,756.92 is: 9,327.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.72 : 11,939.64 = 6,756.92 : x
  2. Step 2: Convert to fraction form
    8,648.72/11,939.64 = 6,756.92/x
  3. Step 3: Cross multiply
    8,648.72x = 11,939.64 × 6,756.92
  4. Step 4: Simplify right side
    8,648.72x = 80,675,192.31
  5. Step 5: Solve for x
    x = 80,675,192.31/8,648.72
  6. Step 6: Final answer
    x = 9,327.99

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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.