Home / 9,288.78-12,816.26-5,255.68

Finding the Fourth Proportional to 9,288.78, 12,816.26 and 5,255.68

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Solution

The fourth proportional to 9,288.78, 12,816.26 and 5,255.68 is: 7,251.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,288.78 : 12,816.26 = 5,255.68 : x
  2. Step 2: Convert to fraction form
    9,288.78/12,816.26 = 5,255.68/x
  3. Step 3: Cross multiply
    9,288.78x = 12,816.26 × 5,255.68
  4. Step 4: Simplify right side
    9,288.78x = 67,358,161.36
  5. Step 5: Solve for x
    x = 67,358,161.36/9,288.78
  6. Step 6: Final answer
    x = 7,251.56

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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.