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Finding the Fourth Proportional to 9,119, 12,610.14 and 8,706.44

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Solution

The fourth proportional to 9,119, 12,610.14 and 8,706.44 is: 12,039.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119 : 12,610.14 = 8,706.44 : x
  2. Step 2: Convert to fraction form
    9,119/12,610.14 = 8,706.44/x
  3. Step 3: Cross multiply
    9,119x = 12,610.14 × 8,706.44
  4. Step 4: Simplify right side
    9,119x = 109,789,427.30
  5. Step 5: Solve for x
    x = 109,789,427.30/9,119
  6. Step 6: Final answer
    x = 12,039.63

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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.