Home / 1,874.88-2,584.56-1,211.68

Finding the Fourth Proportional to 1,874.88, 2,584.56 and 1,211.68

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Solution

The fourth proportional to 1,874.88, 2,584.56 and 1,211.68 is: 1,670.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.88 : 2,584.56 = 1,211.68 : x
  2. Step 2: Convert to fraction form
    1,874.88/2,584.56 = 1,211.68/x
  3. Step 3: Cross multiply
    1,874.88x = 2,584.56 × 1,211.68
  4. Step 4: Simplify right side
    1,874.88x = 3,131,659.66
  5. Step 5: Solve for x
    x = 3,131,659.66/1,874.88
  6. Step 6: Final answer
    x = 1,670.33

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1.5x scale

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.