Home / 2,587.39-3,879.87-943.73

Finding the Fourth Proportional to 2,587.39, 3,879.87 and 943.73

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Solution

The fourth proportional to 2,587.39, 3,879.87 and 943.73 is: 1,415.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.39 : 3,879.87 = 943.73 : x
  2. Step 2: Convert to fraction form
    2,587.39/3,879.87 = 943.73/x
  3. Step 3: Cross multiply
    2,587.39x = 3,879.87 × 943.73
  4. Step 4: Simplify right side
    2,587.39x = 3,661,538.38
  5. Step 5: Solve for x
    x = 3,661,538.38/2,587.39
  6. Step 6: Final answer
    x = 1,415.15

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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.