Home / 9,151.09-12,628.43-5,172.97

Finding the Fourth Proportional to 9,151.09, 12,628.43 and 5,172.97

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Solution

The fourth proportional to 9,151.09, 12,628.43 and 5,172.97 is: 7,138.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.09 : 12,628.43 = 5,172.97 : x
  2. Step 2: Convert to fraction form
    9,151.09/12,628.43 = 5,172.97/x
  3. Step 3: Cross multiply
    9,151.09x = 12,628.43 × 5,172.97
  4. Step 4: Simplify right side
    9,151.09x = 65,326,489.54
  5. Step 5: Solve for x
    x = 65,326,489.54/9,151.09
  6. Step 6: Final answer
    x = 7,138.66

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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.