Home / 3,131.13-4,320.77-1,804.62

Finding the Fourth Proportional to 3,131.13, 4,320.77 and 1,804.62

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Solution

The fourth proportional to 3,131.13, 4,320.77 and 1,804.62 is: 2,490.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.13 : 4,320.77 = 1,804.62 : x
  2. Step 2: Convert to fraction form
    3,131.13/4,320.77 = 1,804.62/x
  3. Step 3: Cross multiply
    3,131.13x = 4,320.77 × 1,804.62
  4. Step 4: Simplify right side
    3,131.13x = 7,797,338.93
  5. Step 5: Solve for x
    x = 7,797,338.93/3,131.13
  6. Step 6: Final answer
    x = 2,490.26

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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.