Home / 1,989.11-2,982.79-1,001.30

Finding the Fourth Proportional to 1,989.11, 2,982.79 and 1,001.30

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Solution

The fourth proportional to 1,989.11, 2,982.79 and 1,001.30 is: 1,501.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.11 : 2,982.79 = 1,001.30 : x
  2. Step 2: Convert to fraction form
    1,989.11/2,982.79 = 1,001.30/x
  3. Step 3: Cross multiply
    1,989.11x = 2,982.79 × 1,001.30
  4. Step 4: Simplify right side
    1,989.11x = 2,986,653.96
  5. Step 5: Solve for x
    x = 2,986,653.96/1,989.11
  6. Step 6: Final answer
    x = 1,501.51

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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.