Home / 2,119.40-3,180.06-949.30

Finding the Fourth Proportional to 2,119.40, 3,180.06 and 949.30

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Solution

The fourth proportional to 2,119.40, 3,180.06 and 949.30 is: 1,424.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.40 : 3,180.06 = 949.30 : x
  2. Step 2: Convert to fraction form
    2,119.40/3,180.06 = 949.30/x
  3. Step 3: Cross multiply
    2,119.40x = 3,180.06 × 949.30
  4. Step 4: Simplify right side
    2,119.40x = 3,018,840.90
  5. Step 5: Solve for x
    x = 3,018,840.90/2,119.40
  6. Step 6: Final answer
    x = 1,424.39

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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.