Home / 8,910.64-12,296.88-5,772.28

Finding the Fourth Proportional to 8,910.64, 12,296.88 and 5,772.28

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Solution

The fourth proportional to 8,910.64, 12,296.88 and 5,772.28 is: 7,965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.64 : 12,296.88 = 5,772.28 : x
  2. Step 2: Convert to fraction form
    8,910.64/12,296.88 = 5,772.28/x
  3. Step 3: Cross multiply
    8,910.64x = 12,296.88 × 5,772.28
  4. Step 4: Simplify right side
    8,910.64x = 70,981,034.49
  5. Step 5: Solve for x
    x = 70,981,034.49/8,910.64
  6. Step 6: Final answer
    x = 7,965.87

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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.