Home / 3,749.20-5,178.06-2,919.88

Finding the Fourth Proportional to 3,749.20, 5,178.06 and 2,919.88

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Solution

The fourth proportional to 3,749.20, 5,178.06 and 2,919.88 is: 4,032.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.20 : 5,178.06 = 2,919.88 : x
  2. Step 2: Convert to fraction form
    3,749.20/5,178.06 = 2,919.88/x
  3. Step 3: Cross multiply
    3,749.20x = 5,178.06 × 2,919.88
  4. Step 4: Simplify right side
    3,749.20x = 15,119,313.83
  5. Step 5: Solve for x
    x = 15,119,313.83/3,749.20
  6. Step 6: Final answer
    x = 4,032.68

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1.5x scale

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.