Home / 4,739.78-7,109.67-2,142.11

Finding the Fourth Proportional to 4,739.78, 7,109.67 and 2,142.11

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Solution

The fourth proportional to 4,739.78, 7,109.67 and 2,142.11 is: 3,213.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.78 : 7,109.67 = 2,142.11 : x
  2. Step 2: Convert to fraction form
    4,739.78/7,109.67 = 2,142.11/x
  3. Step 3: Cross multiply
    4,739.78x = 7,109.67 × 2,142.11
  4. Step 4: Simplify right side
    4,739.78x = 15,229,695.20
  5. Step 5: Solve for x
    x = 15,229,695.20/4,739.78
  6. Step 6: Final answer
    x = 3,213.17

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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.