Home / 1,845.72-2,767.41-612.81

Finding the Fourth Proportional to 1,845.72, 2,767.41 and 612.81

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Solution

The fourth proportional to 1,845.72, 2,767.41 and 612.81 is: 918.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,845.72 : 2,767.41 = 612.81 : x
  2. Step 2: Convert to fraction form
    1,845.72/2,767.41 = 612.81/x
  3. Step 3: Cross multiply
    1,845.72x = 2,767.41 × 612.81
  4. Step 4: Simplify right side
    1,845.72x = 1,695,896.52
  5. Step 5: Solve for x
    x = 1,695,896.52/1,845.72
  6. Step 6: Final answer
    x = 918.83

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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.