Home / 2,217.19-3,059.68-1,222.45

Finding the Fourth Proportional to 2,217.19, 3,059.68 and 1,222.45

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Solution

The fourth proportional to 2,217.19, 3,059.68 and 1,222.45 is: 1,686.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.19 : 3,059.68 = 1,222.45 : x
  2. Step 2: Convert to fraction form
    2,217.19/3,059.68 = 1,222.45/x
  3. Step 3: Cross multiply
    2,217.19x = 3,059.68 × 1,222.45
  4. Step 4: Simplify right side
    2,217.19x = 3,740,305.82
  5. Step 5: Solve for x
    x = 3,740,305.82/2,217.19
  6. Step 6: Final answer
    x = 1,686.96

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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.