Home / 2,227.21-3,073.45-1,218.90

Finding the Fourth Proportional to 2,227.21, 3,073.45 and 1,218.90

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Solution

The fourth proportional to 2,227.21, 3,073.45 and 1,218.90 is: 1,682.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,227.21 : 3,073.45 = 1,218.90 : x
  2. Step 2: Convert to fraction form
    2,227.21/3,073.45 = 1,218.90/x
  3. Step 3: Cross multiply
    2,227.21x = 3,073.45 × 1,218.90
  4. Step 4: Simplify right side
    2,227.21x = 3,746,206.74
  5. Step 5: Solve for x
    x = 3,746,206.74/2,227.21
  6. Step 6: Final answer
    x = 1,682.02

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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.