Home / 1,919.40-2,642.88-1,448.04

Finding the Fourth Proportional to 1,919.40, 2,642.88 and 1,448.04

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Solution

The fourth proportional to 1,919.40, 2,642.88 and 1,448.04 is: 1,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.40 : 2,642.88 = 1,448.04 : x
  2. Step 2: Convert to fraction form
    1,919.40/2,642.88 = 1,448.04/x
  3. Step 3: Cross multiply
    1,919.40x = 2,642.88 × 1,448.04
  4. Step 4: Simplify right side
    1,919.40x = 3,826,995.96
  5. Step 5: Solve for x
    x = 3,826,995.96/1,919.40
  6. Step 6: Final answer
    x = 1,993.85

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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.