Home / 2,751.40-4,119.90-2,621.80

Finding the Fourth Proportional to 2,751.40, 4,119.90 and 2,621.80

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Solution

The fourth proportional to 2,751.40, 4,119.90 and 2,621.80 is: 3,925.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.40 : 4,119.90 = 2,621.80 : x
  2. Step 2: Convert to fraction form
    2,751.40/4,119.90 = 2,621.80/x
  3. Step 3: Cross multiply
    2,751.40x = 4,119.90 × 2,621.80
  4. Step 4: Simplify right side
    2,751.40x = 10,801,553.82
  5. Step 5: Solve for x
    x = 10,801,553.82/2,751.40
  6. Step 6: Final answer
    x = 3,925.84

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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.