Home / 1,919.04-2,642.78-1,728.36

Finding the Fourth Proportional to 1,919.04, 2,642.78 and 1,728.36

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Solution

The fourth proportional to 1,919.04, 2,642.78 and 1,728.36 is: 2,380.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.04 : 2,642.78 = 1,728.36 : x
  2. Step 2: Convert to fraction form
    1,919.04/2,642.78 = 1,728.36/x
  3. Step 3: Cross multiply
    1,919.04x = 2,642.78 × 1,728.36
  4. Step 4: Simplify right side
    1,919.04x = 4,567,675.24
  5. Step 5: Solve for x
    x = 4,567,675.24/1,919.04
  6. Step 6: Final answer
    x = 2,380.19

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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.