Home / 1,578.26-2,176.60-1,018.75

Finding the Fourth Proportional to 1,578.26, 2,176.60 and 1,018.75

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Solution

The fourth proportional to 1,578.26, 2,176.60 and 1,018.75 is: 1,404.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.26 : 2,176.60 = 1,018.75 : x
  2. Step 2: Convert to fraction form
    1,578.26/2,176.60 = 1,018.75/x
  3. Step 3: Cross multiply
    1,578.26x = 2,176.60 × 1,018.75
  4. Step 4: Simplify right side
    1,578.26x = 2,217,411.25
  5. Step 5: Solve for x
    x = 2,217,411.25/1,578.26
  6. Step 6: Final answer
    x = 1,404.97

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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.