Home / 2,217.55-3,060.28-1,222.77

Finding the Fourth Proportional to 2,217.55, 3,060.28 and 1,222.77

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Solution

The fourth proportional to 2,217.55, 3,060.28 and 1,222.77 is: 1,687.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.55 : 3,060.28 = 1,222.77 : x
  2. Step 2: Convert to fraction form
    2,217.55/3,060.28 = 1,222.77/x
  3. Step 3: Cross multiply
    2,217.55x = 3,060.28 × 1,222.77
  4. Step 4: Simplify right side
    2,217.55x = 3,742,022.97
  5. Step 5: Solve for x
    x = 3,742,022.97/2,217.55
  6. Step 6: Final answer
    x = 1,687.46

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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.