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Finding the Fourth Proportional to 8,617.92, 11,893.92 and 5,260.80

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Solution

The fourth proportional to 8,617.92, 11,893.92 and 5,260.80 is: 7,260.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.92 : 11,893.92 = 5,260.80 : x
  2. Step 2: Convert to fraction form
    8,617.92/11,893.92 = 5,260.80/x
  3. Step 3: Cross multiply
    8,617.92x = 11,893.92 × 5,260.80
  4. Step 4: Simplify right side
    8,617.92x = 62,571,534.34
  5. Step 5: Solve for x
    x = 62,571,534.34/8,617.92
  6. Step 6: Final answer
    x = 7,260.63

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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.