Home / 1,790.25-2,685.37-491.70

Finding the Fourth Proportional to 1,790.25, 2,685.37 and 491.70

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Solution

The fourth proportional to 1,790.25, 2,685.37 and 491.70 is: 737.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.25 : 2,685.37 = 491.70 : x
  2. Step 2: Convert to fraction form
    1,790.25/2,685.37 = 491.70/x
  3. Step 3: Cross multiply
    1,790.25x = 2,685.37 × 491.70
  4. Step 4: Simplify right side
    1,790.25x = 1,320,396.43
  5. Step 5: Solve for x
    x = 1,320,396.43/1,790.25
  6. Step 6: Final answer
    x = 737.55

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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.