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Finding the Fourth Proportional to 9,151.54, 12,629.07 and 5,118.36

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Solution

The fourth proportional to 9,151.54, 12,629.07 and 5,118.36 is: 7,063.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.54 : 12,629.07 = 5,118.36 : x
  2. Step 2: Convert to fraction form
    9,151.54/12,629.07 = 5,118.36/x
  3. Step 3: Cross multiply
    9,151.54x = 12,629.07 × 5,118.36
  4. Step 4: Simplify right side
    9,151.54x = 64,640,126.73
  5. Step 5: Solve for x
    x = 64,640,126.73/9,151.54
  6. Step 6: Final answer
    x = 7,063.31

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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.