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Finding the Fourth Proportional to 9,133.56, 12,611.22 and 8,988.30

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Solution

The fourth proportional to 9,133.56, 12,611.22 and 8,988.30 is: 12,410.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,133.56 : 12,611.22 = 8,988.30 : x
  2. Step 2: Convert to fraction form
    9,133.56/12,611.22 = 8,988.30/x
  3. Step 3: Cross multiply
    9,133.56x = 12,611.22 × 8,988.30
  4. Step 4: Simplify right side
    9,133.56x = 113,353,428.73
  5. Step 5: Solve for x
    x = 113,353,428.73/9,133.56
  6. Step 6: Final answer
    x = 12,410.65

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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.