Home / 1,622.21-2,238.66-1,228.55

Finding the Fourth Proportional to 1,622.21, 2,238.66 and 1,228.55

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Solution

The fourth proportional to 1,622.21, 2,238.66 and 1,228.55 is: 1,695.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.21 : 2,238.66 = 1,228.55 : x
  2. Step 2: Convert to fraction form
    1,622.21/2,238.66 = 1,228.55/x
  3. Step 3: Cross multiply
    1,622.21x = 2,238.66 × 1,228.55
  4. Step 4: Simplify right side
    1,622.21x = 2,750,305.74
  5. Step 5: Solve for x
    x = 2,750,305.74/1,622.21
  6. Step 6: Final answer
    x = 1,695.41

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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.