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Finding the Fourth Proportional to 8,699.16, 11,999.82 and 5,551.80

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Solution

The fourth proportional to 8,699.16, 11,999.82 and 5,551.80 is: 7,658.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.16 : 11,999.82 = 5,551.80 : x
  2. Step 2: Convert to fraction form
    8,699.16/11,999.82 = 5,551.80/x
  3. Step 3: Cross multiply
    8,699.16x = 11,999.82 × 5,551.80
  4. Step 4: Simplify right side
    8,699.16x = 66,620,600.68
  5. Step 5: Solve for x
    x = 66,620,600.68/8,699.16
  6. Step 6: Final answer
    x = 7,658.28

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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.