Home / 8,813.88-13,221.36-2,891.16

Finding the Fourth Proportional to 8,813.88, 13,221.36 and 2,891.16

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Solution

The fourth proportional to 8,813.88, 13,221.36 and 2,891.16 is: 4,336.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.88 : 13,221.36 = 2,891.16 : x
  2. Step 2: Convert to fraction form
    8,813.88/13,221.36 = 2,891.16/x
  3. Step 3: Cross multiply
    8,813.88x = 13,221.36 × 2,891.16
  4. Step 4: Simplify right side
    8,813.88x = 38,225,067.18
  5. Step 5: Solve for x
    x = 38,225,067.18/8,813.88
  6. Step 6: Final answer
    x = 4,336.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.