Home / 2,119.99-3,179.45-949.34

Finding the Fourth Proportional to 2,119.99, 3,179.45 and 949.34

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Solution

The fourth proportional to 2,119.99, 3,179.45 and 949.34 is: 1,423.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.99 : 3,179.45 = 949.34 : x
  2. Step 2: Convert to fraction form
    2,119.99/3,179.45 = 949.34/x
  3. Step 3: Cross multiply
    2,119.99x = 3,179.45 × 949.34
  4. Step 4: Simplify right side
    2,119.99x = 3,018,358.42
  5. Step 5: Solve for x
    x = 3,018,358.42/2,119.99
  6. Step 6: Final answer
    x = 1,423.76

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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.