Home / 2,221.12-3,038.51-2,211.76

Finding the Fourth Proportional to 2,221.12, 3,038.51 and 2,211.76

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Solution

The fourth proportional to 2,221.12, 3,038.51 and 2,211.76 is: 3,025.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.12 : 3,038.51 = 2,211.76 : x
  2. Step 2: Convert to fraction form
    2,221.12/3,038.51 = 2,211.76/x
  3. Step 3: Cross multiply
    2,221.12x = 3,038.51 × 2,211.76
  4. Step 4: Simplify right side
    2,221.12x = 6,720,454.88
  5. Step 5: Solve for x
    x = 6,720,454.88/2,221.12
  6. Step 6: Final answer
    x = 3,025.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.