Home / 1,874.62-2,587.14-1,128.58

Finding the Fourth Proportional to 1,874.62, 2,587.14 and 1,128.58

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Solution

The fourth proportional to 1,874.62, 2,587.14 and 1,128.58 is: 1,557.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.62 : 2,587.14 = 1,128.58 : x
  2. Step 2: Convert to fraction form
    1,874.62/2,587.14 = 1,128.58/x
  3. Step 3: Cross multiply
    1,874.62x = 2,587.14 × 1,128.58
  4. Step 4: Simplify right side
    1,874.62x = 2,919,794.46
  5. Step 5: Solve for x
    x = 2,919,794.46/1,874.62
  6. Step 6: Final answer
    x = 1,557.54

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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.