Home / 1,991.02-2,986.62-604.56

Finding the Fourth Proportional to 1,991.02, 2,986.62 and 604.56

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Solution

The fourth proportional to 1,991.02, 2,986.62 and 604.56 is: 906.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.02 : 2,986.62 = 604.56 : x
  2. Step 2: Convert to fraction form
    1,991.02/2,986.62 = 604.56/x
  3. Step 3: Cross multiply
    1,991.02x = 2,986.62 × 604.56
  4. Step 4: Simplify right side
    1,991.02x = 1,805,590.99
  5. Step 5: Solve for x
    x = 1,805,590.99/1,991.02
  6. Step 6: Final answer
    x = 906.87

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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.