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Finding the Fourth Proportional to 8,696.12, 11,991.80 and 7,441.32

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Solution

The fourth proportional to 8,696.12, 11,991.80 and 7,441.32 is: 10,261.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.12 : 11,991.80 = 7,441.32 : x
  2. Step 2: Convert to fraction form
    8,696.12/11,991.80 = 7,441.32/x
  3. Step 3: Cross multiply
    8,696.12x = 11,991.80 × 7,441.32
  4. Step 4: Simplify right side
    8,696.12x = 89,234,821.18
  5. Step 5: Solve for x
    x = 89,234,821.18/8,696.12
  6. Step 6: Final answer
    x = 10,261.45

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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.