Home / 1,086.52-1,629.24-653.44

Finding the Fourth Proportional to 1,086.52, 1,629.24 and 653.44

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Solution

The fourth proportional to 1,086.52, 1,629.24 and 653.44 is: 979.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.52 : 1,629.24 = 653.44 : x
  2. Step 2: Convert to fraction form
    1,086.52/1,629.24 = 653.44/x
  3. Step 3: Cross multiply
    1,086.52x = 1,629.24 × 653.44
  4. Step 4: Simplify right side
    1,086.52x = 1,064,610.59
  5. Step 5: Solve for x
    x = 1,064,610.59/1,086.52
  6. Step 6: Final answer
    x = 979.84

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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.