Home / 3,853.33-5,780.40-1,255.66

Finding the Fourth Proportional to 3,853.33, 5,780.40 and 1,255.66

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Solution

The fourth proportional to 3,853.33, 5,780.40 and 1,255.66 is: 1,883.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.33 : 5,780.40 = 1,255.66 : x
  2. Step 2: Convert to fraction form
    3,853.33/5,780.40 = 1,255.66/x
  3. Step 3: Cross multiply
    3,853.33x = 5,780.40 × 1,255.66
  4. Step 4: Simplify right side
    3,853.33x = 7,258,181.88
  5. Step 5: Solve for x
    x = 7,258,181.88/3,853.33
  6. Step 6: Final answer
    x = 1,883.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.