Home / 1,578.62-2,179.50-1,019.36

Finding the Fourth Proportional to 1,578.62, 2,179.50 and 1,019.36

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Solution

The fourth proportional to 1,578.62, 2,179.50 and 1,019.36 is: 1,407.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.62 : 2,179.50 = 1,019.36 : x
  2. Step 2: Convert to fraction form
    1,578.62/2,179.50 = 1,019.36/x
  3. Step 3: Cross multiply
    1,578.62x = 2,179.50 × 1,019.36
  4. Step 4: Simplify right side
    1,578.62x = 2,221,695.12
  5. Step 5: Solve for x
    x = 2,221,695.12/1,578.62
  6. Step 6: Final answer
    x = 1,407.37

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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.