Home / 1,855.59-2,785.28-1,243.56

Finding the Fourth Proportional to 1,855.59, 2,785.28 and 1,243.56

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Solution

The fourth proportional to 1,855.59, 2,785.28 and 1,243.56 is: 1,866.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.59 : 2,785.28 = 1,243.56 : x
  2. Step 2: Convert to fraction form
    1,855.59/2,785.28 = 1,243.56/x
  3. Step 3: Cross multiply
    1,855.59x = 2,785.28 × 1,243.56
  4. Step 4: Simplify right side
    1,855.59x = 3,463,656.58
  5. Step 5: Solve for x
    x = 3,463,656.58/1,855.59
  6. Step 6: Final answer
    x = 1,866.61

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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.