Home / 5,131.46-7,081.40-2,773.60

Finding the Fourth Proportional to 5,131.46, 7,081.40 and 2,773.60

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Solution

The fourth proportional to 5,131.46, 7,081.40 and 2,773.60 is: 3,827.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.46 : 7,081.40 = 2,773.60 : x
  2. Step 2: Convert to fraction form
    5,131.46/7,081.40 = 2,773.60/x
  3. Step 3: Cross multiply
    5,131.46x = 7,081.40 × 2,773.60
  4. Step 4: Simplify right side
    5,131.46x = 19,640,971.04
  5. Step 5: Solve for x
    x = 19,640,971.04/5,131.46
  6. Step 6: Final answer
    x = 3,827.56

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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.