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Finding the Fourth Proportional to 8,681.22, 11,985.57 and 6,696.18

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Solution

The fourth proportional to 8,681.22, 11,985.57 and 6,696.18 is: 9,244.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.22 : 11,985.57 = 6,696.18 : x
  2. Step 2: Convert to fraction form
    8,681.22/11,985.57 = 6,696.18/x
  3. Step 3: Cross multiply
    8,681.22x = 11,985.57 × 6,696.18
  4. Step 4: Simplify right side
    8,681.22x = 80,257,534.12
  5. Step 5: Solve for x
    x = 80,257,534.12/8,681.22
  6. Step 6: Final answer
    x = 9,244.96

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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.