Home / 2,288.29-3,431.62-989.05

Finding the Fourth Proportional to 2,288.29, 3,431.62 and 989.05

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Solution

The fourth proportional to 2,288.29, 3,431.62 and 989.05 is: 1,483.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.29 : 3,431.62 = 989.05 : x
  2. Step 2: Convert to fraction form
    2,288.29/3,431.62 = 989.05/x
  3. Step 3: Cross multiply
    2,288.29x = 3,431.62 × 989.05
  4. Step 4: Simplify right side
    2,288.29x = 3,394,040.71
  5. Step 5: Solve for x
    x = 3,394,040.71/2,288.29
  6. Step 6: Final answer
    x = 1,483.22

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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.