Home / 5,171.12-7,758.04-2,705.28

Finding the Fourth Proportional to 5,171.12, 7,758.04 and 2,705.28

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Solution

The fourth proportional to 5,171.12, 7,758.04 and 2,705.28 is: 4,058.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.12 : 7,758.04 = 2,705.28 : x
  2. Step 2: Convert to fraction form
    5,171.12/7,758.04 = 2,705.28/x
  3. Step 3: Cross multiply
    5,171.12x = 7,758.04 × 2,705.28
  4. Step 4: Simplify right side
    5,171.12x = 20,987,631.66
  5. Step 5: Solve for x
    x = 20,987,631.66/5,171.12
  6. Step 6: Final answer
    x = 4,058.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.