Home / 1,331.37-1,992.99-1,039.77

Finding the Fourth Proportional to 1,331.37, 1,992.99 and 1,039.77

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Solution

The fourth proportional to 1,331.37, 1,992.99 and 1,039.77 is: 1,556.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.37 : 1,992.99 = 1,039.77 : x
  2. Step 2: Convert to fraction form
    1,331.37/1,992.99 = 1,039.77/x
  3. Step 3: Cross multiply
    1,331.37x = 1,992.99 × 1,039.77
  4. Step 4: Simplify right side
    1,331.37x = 2,072,251.21
  5. Step 5: Solve for x
    x = 2,072,251.21/1,331.37
  6. Step 6: Final answer
    x = 1,556.48

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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.