Home / 5,137.72-7,090.80-3,147.96

Finding the Fourth Proportional to 5,137.72, 7,090.80 and 3,147.96

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Solution

The fourth proportional to 5,137.72, 7,090.80 and 3,147.96 is: 4,344.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.72 : 7,090.80 = 3,147.96 : x
  2. Step 2: Convert to fraction form
    5,137.72/7,090.80 = 3,147.96/x
  3. Step 3: Cross multiply
    5,137.72x = 7,090.80 × 3,147.96
  4. Step 4: Simplify right side
    5,137.72x = 22,321,554.77
  5. Step 5: Solve for x
    x = 22,321,554.77/5,137.72
  6. Step 6: Final answer
    x = 4,344.64

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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.