Home / 1,988.31-2,743.16-1,202.07

Finding the Fourth Proportional to 1,988.31, 2,743.16 and 1,202.07

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Solution

The fourth proportional to 1,988.31, 2,743.16 and 1,202.07 is: 1,658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.31 : 2,743.16 = 1,202.07 : x
  2. Step 2: Convert to fraction form
    1,988.31/2,743.16 = 1,202.07/x
  3. Step 3: Cross multiply
    1,988.31x = 2,743.16 × 1,202.07
  4. Step 4: Simplify right side
    1,988.31x = 3,297,464.33
  5. Step 5: Solve for x
    x = 3,297,464.33/1,988.31
  6. Step 6: Final answer
    x = 1,658.43

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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.