Home / 1,622.19-2,238.63-983.92

Finding the Fourth Proportional to 1,622.19, 2,238.63 and 983.92

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Solution

The fourth proportional to 1,622.19, 2,238.63 and 983.92 is: 1,357.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.19 : 2,238.63 = 983.92 : x
  2. Step 2: Convert to fraction form
    1,622.19/2,238.63 = 983.92/x
  3. Step 3: Cross multiply
    1,622.19x = 2,238.63 × 983.92
  4. Step 4: Simplify right side
    1,622.19x = 2,202,616.72
  5. Step 5: Solve for x
    x = 2,202,616.72/1,622.19
  6. Step 6: Final answer
    x = 1,357.81

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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.