Home / 4,751.82-7,129.43-2,119.10

Finding the Fourth Proportional to 4,751.82, 7,129.43 and 2,119.10

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Solution

The fourth proportional to 4,751.82, 7,129.43 and 2,119.10 is: 3,179.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.82 : 7,129.43 = 2,119.10 : x
  2. Step 2: Convert to fraction form
    4,751.82/7,129.43 = 2,119.10/x
  3. Step 3: Cross multiply
    4,751.82x = 7,129.43 × 2,119.10
  4. Step 4: Simplify right side
    4,751.82x = 15,107,948.74
  5. Step 5: Solve for x
    x = 15,107,948.74/4,751.82
  6. Step 6: Final answer
    x = 3,179.40

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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.