Home / 3,720.08-5,134.47-2,147.96

Finding the Fourth Proportional to 3,720.08, 5,134.47 and 2,147.96

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Solution

The fourth proportional to 3,720.08, 5,134.47 and 2,147.96 is: 2,964.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.08 : 5,134.47 = 2,147.96 : x
  2. Step 2: Convert to fraction form
    3,720.08/5,134.47 = 2,147.96/x
  3. Step 3: Cross multiply
    3,720.08x = 5,134.47 × 2,147.96
  4. Step 4: Simplify right side
    3,720.08x = 11,028,636.18
  5. Step 5: Solve for x
    x = 11,028,636.18/3,720.08
  6. Step 6: Final answer
    x = 2,964.62

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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.