Home / 1,083.36-1,621.40-650.82

Finding the Fourth Proportional to 1,083.36, 1,621.40 and 650.82

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Solution

The fourth proportional to 1,083.36, 1,621.40 and 650.82 is: 974.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.36 : 1,621.40 = 650.82 : x
  2. Step 2: Convert to fraction form
    1,083.36/1,621.40 = 650.82/x
  3. Step 3: Cross multiply
    1,083.36x = 1,621.40 × 650.82
  4. Step 4: Simplify right side
    1,083.36x = 1,055,239.55
  5. Step 5: Solve for x
    x = 1,055,239.55/1,083.36
  6. Step 6: Final answer
    x = 974.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.