Home / 1,578.90-2,179.43-1,083.18

Finding the Fourth Proportional to 1,578.90, 2,179.43 and 1,083.18

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Solution

The fourth proportional to 1,578.90, 2,179.43 and 1,083.18 is: 1,495.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.90 : 2,179.43 = 1,083.18 : x
  2. Step 2: Convert to fraction form
    1,578.90/2,179.43 = 1,083.18/x
  3. Step 3: Cross multiply
    1,578.90x = 2,179.43 × 1,083.18
  4. Step 4: Simplify right side
    1,578.90x = 2,360,717.70
  5. Step 5: Solve for x
    x = 2,360,717.70/1,578.90
  6. Step 6: Final answer
    x = 1,495.17

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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.