Home / 2,275.30-3,138.30-2,199.09

Finding the Fourth Proportional to 2,275.30, 3,138.30 and 2,199.09

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Solution

The fourth proportional to 2,275.30, 3,138.30 and 2,199.09 is: 3,033.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.30 : 3,138.30 = 2,199.09 : x
  2. Step 2: Convert to fraction form
    2,275.30/3,138.30 = 2,199.09/x
  3. Step 3: Cross multiply
    2,275.30x = 3,138.30 × 2,199.09
  4. Step 4: Simplify right side
    2,275.30x = 6,901,404.15
  5. Step 5: Solve for x
    x = 6,901,404.15/2,275.30
  6. Step 6: Final answer
    x = 3,033.19

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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.