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Finding the Fourth Proportional to 9,366.89, 12,926.55 and 5,388.38

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Solution

The fourth proportional to 9,366.89, 12,926.55 and 5,388.38 is: 7,436.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,366.89 : 12,926.55 = 5,388.38 : x
  2. Step 2: Convert to fraction form
    9,366.89/12,926.55 = 5,388.38/x
  3. Step 3: Cross multiply
    9,366.89x = 12,926.55 × 5,388.38
  4. Step 4: Simplify right side
    9,366.89x = 69,653,163.49
  5. Step 5: Solve for x
    x = 69,653,163.49/9,366.89
  6. Step 6: Final answer
    x = 7,436.10

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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.