Home / 5,131.85-7,081.97-2,774.00

Finding the Fourth Proportional to 5,131.85, 7,081.97 and 2,774.00

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Solution

The fourth proportional to 5,131.85, 7,081.97 and 2,774.00 is: 3,828.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.85 : 7,081.97 = 2,774.00 : x
  2. Step 2: Convert to fraction form
    5,131.85/7,081.97 = 2,774.00/x
  3. Step 3: Cross multiply
    5,131.85x = 7,081.97 × 2,774.00
  4. Step 4: Simplify right side
    5,131.85x = 19,645,388.61
  5. Step 5: Solve for x
    x = 19,645,388.61/5,131.85
  6. Step 6: Final answer
    x = 3,828.13

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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.