Home / 1,489.11-2,054.43-899.43

Finding the Fourth Proportional to 1,489.11, 2,054.43 and 899.43

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Solution

The fourth proportional to 1,489.11, 2,054.43 and 899.43 is: 1,240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.11 : 2,054.43 = 899.43 : x
  2. Step 2: Convert to fraction form
    1,489.11/2,054.43 = 899.43/x
  3. Step 3: Cross multiply
    1,489.11x = 2,054.43 × 899.43
  4. Step 4: Simplify right side
    1,489.11x = 1,847,815.97
  5. Step 5: Solve for x
    x = 1,847,815.97/1,489.11
  6. Step 6: Final answer
    x = 1,240.89

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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.