Home / 3,131.48-4,320.87-1,805.27

Finding the Fourth Proportional to 3,131.48, 4,320.87 and 1,805.27

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Solution

The fourth proportional to 3,131.48, 4,320.87 and 1,805.27 is: 2,490.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.48 : 4,320.87 = 1,805.27 : x
  2. Step 2: Convert to fraction form
    3,131.48/4,320.87 = 1,805.27/x
  3. Step 3: Cross multiply
    3,131.48x = 4,320.87 × 1,805.27
  4. Step 4: Simplify right side
    3,131.48x = 7,800,336.98
  5. Step 5: Solve for x
    x = 7,800,336.98/3,131.48
  6. Step 6: Final answer
    x = 2,490.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.