Home / 1,949.76-2,921.28-1,399.32

Finding the Fourth Proportional to 1,949.76, 2,921.28 and 1,399.32

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Solution

The fourth proportional to 1,949.76, 2,921.28 and 1,399.32 is: 2,096.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.76 : 2,921.28 = 1,399.32 : x
  2. Step 2: Convert to fraction form
    1,949.76/2,921.28 = 1,399.32/x
  3. Step 3: Cross multiply
    1,949.76x = 2,921.28 × 1,399.32
  4. Step 4: Simplify right side
    1,949.76x = 4,087,805.53
  5. Step 5: Solve for x
    x = 4,087,805.53/1,949.76
  6. Step 6: Final answer
    x = 2,096.57

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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.