Home / 3,131.08-4,319.94-1,804

Finding the Fourth Proportional to 3,131.08, 4,319.94 and 1,804

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Solution

The fourth proportional to 3,131.08, 4,319.94 and 1,804 is: 2,488.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.08 : 4,319.94 = 1,804 : x
  2. Step 2: Convert to fraction form
    3,131.08/4,319.94 = 1,804/x
  3. Step 3: Cross multiply
    3,131.08x = 4,319.94 × 1,804
  4. Step 4: Simplify right side
    3,131.08x = 7,793,171.76
  5. Step 5: Solve for x
    x = 7,793,171.76/3,131.08
  6. Step 6: Final answer
    x = 2,488.97

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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.