Home / 1,201.36-1,789.62-1,165.10

Finding the Fourth Proportional to 1,201.36, 1,789.62 and 1,165.10

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Solution

The fourth proportional to 1,201.36, 1,789.62 and 1,165.10 is: 1,735.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.36 : 1,789.62 = 1,165.10 : x
  2. Step 2: Convert to fraction form
    1,201.36/1,789.62 = 1,165.10/x
  3. Step 3: Cross multiply
    1,201.36x = 1,789.62 × 1,165.10
  4. Step 4: Simplify right side
    1,201.36x = 2,085,086.26
  5. Step 5: Solve for x
    x = 2,085,086.26/1,201.36
  6. Step 6: Final answer
    x = 1,735.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.