Home / 1,790.14-2,685.21-491.71

Finding the Fourth Proportional to 1,790.14, 2,685.21 and 491.71

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Solution

The fourth proportional to 1,790.14, 2,685.21 and 491.71 is: 737.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.14 : 2,685.21 = 491.71 : x
  2. Step 2: Convert to fraction form
    1,790.14/2,685.21 = 491.71/x
  3. Step 3: Cross multiply
    1,790.14x = 2,685.21 × 491.71
  4. Step 4: Simplify right side
    1,790.14x = 1,320,344.61
  5. Step 5: Solve for x
    x = 1,320,344.61/1,790.14
  6. Step 6: Final answer
    x = 737.57

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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.