Home / 2,749.20-4,122.14-1,081.34

Finding the Fourth Proportional to 2,749.20, 4,122.14 and 1,081.34

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Solution

The fourth proportional to 2,749.20, 4,122.14 and 1,081.34 is: 1,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.20 : 4,122.14 = 1,081.34 : x
  2. Step 2: Convert to fraction form
    2,749.20/4,122.14 = 1,081.34/x
  3. Step 3: Cross multiply
    2,749.20x = 4,122.14 × 1,081.34
  4. Step 4: Simplify right side
    2,749.20x = 4,457,408.85
  5. Step 5: Solve for x
    x = 4,457,408.85/2,749.20
  6. Step 6: Final answer
    x = 1,621.35

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1.5x scale

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.