Home / 1,987.23-2,743.23-1,201.14

Finding the Fourth Proportional to 1,987.23, 2,743.23 and 1,201.14

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Solution

The fourth proportional to 1,987.23, 2,743.23 and 1,201.14 is: 1,658.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.23 : 2,743.23 = 1,201.14 : x
  2. Step 2: Convert to fraction form
    1,987.23/2,743.23 = 1,201.14/x
  3. Step 3: Cross multiply
    1,987.23x = 2,743.23 × 1,201.14
  4. Step 4: Simplify right side
    1,987.23x = 3,295,003.28
  5. Step 5: Solve for x
    x = 3,295,003.28/1,987.23
  6. Step 6: Final answer
    x = 1,658.09

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1.5x scale

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.