Home / 1,991.49-2,986.27-604.46

Finding the Fourth Proportional to 1,991.49, 2,986.27 and 604.46

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Solution

The fourth proportional to 1,991.49, 2,986.27 and 604.46 is: 906.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.49 : 2,986.27 = 604.46 : x
  2. Step 2: Convert to fraction form
    1,991.49/2,986.27 = 604.46/x
  3. Step 3: Cross multiply
    1,991.49x = 2,986.27 × 604.46
  4. Step 4: Simplify right side
    1,991.49x = 1,805,086.72
  5. Step 5: Solve for x
    x = 1,805,086.72/1,991.49
  6. Step 6: Final answer
    x = 906.40

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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.