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Finding the Fourth Proportional to 9,275.95, 12,806.94 and 7,147.54

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Solution

The fourth proportional to 9,275.95, 12,806.94 and 7,147.54 is: 9,868.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,275.95 : 12,806.94 = 7,147.54 : x
  2. Step 2: Convert to fraction form
    9,275.95/12,806.94 = 7,147.54/x
  3. Step 3: Cross multiply
    9,275.95x = 12,806.94 × 7,147.54
  4. Step 4: Simplify right side
    9,275.95x = 91,538,115.93
  5. Step 5: Solve for x
    x = 91,538,115.93/9,275.95
  6. Step 6: Final answer
    x = 9,868.33

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Double scale
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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.