Home / 1,991.15-2,986.88-604.59

Finding the Fourth Proportional to 1,991.15, 2,986.88 and 604.59

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Solution

The fourth proportional to 1,991.15, 2,986.88 and 604.59 is: 906.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.15 : 2,986.88 = 604.59 : x
  2. Step 2: Convert to fraction form
    1,991.15/2,986.88 = 604.59/x
  3. Step 3: Cross multiply
    1,991.15x = 2,986.88 × 604.59
  4. Step 4: Simplify right side
    1,991.15x = 1,805,834.76
  5. Step 5: Solve for x
    x = 1,805,834.76/1,991.15
  6. Step 6: Final answer
    x = 906.93

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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.