Home / 1,508.24-2,078.05-1,128.55

Finding the Fourth Proportional to 1,508.24, 2,078.05 and 1,128.55

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Solution

The fourth proportional to 1,508.24, 2,078.05 and 1,128.55 is: 1,554.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.24 : 2,078.05 = 1,128.55 : x
  2. Step 2: Convert to fraction form
    1,508.24/2,078.05 = 1,128.55/x
  3. Step 3: Cross multiply
    1,508.24x = 2,078.05 × 1,128.55
  4. Step 4: Simplify right side
    1,508.24x = 2,345,183.33
  5. Step 5: Solve for x
    x = 2,345,183.33/1,508.24
  6. Step 6: Final answer
    x = 1,554.91

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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.