Home / 3,107.61-4,284.23-2,221.88

Finding the Fourth Proportional to 3,107.61, 4,284.23 and 2,221.88

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Solution

The fourth proportional to 3,107.61, 4,284.23 and 2,221.88 is: 3,063.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.61 : 4,284.23 = 2,221.88 : x
  2. Step 2: Convert to fraction form
    3,107.61/4,284.23 = 2,221.88/x
  3. Step 3: Cross multiply
    3,107.61x = 4,284.23 × 2,221.88
  4. Step 4: Simplify right side
    3,107.61x = 9,519,012.42
  5. Step 5: Solve for x
    x = 9,519,012.42/3,107.61
  6. Step 6: Final answer
    x = 3,063.13

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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.