Home / 3,853.91-5,780.88-1,256.85

Finding the Fourth Proportional to 3,853.91, 5,780.88 and 1,256.85

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Solution

The fourth proportional to 3,853.91, 5,780.88 and 1,256.85 is: 1,885.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.91 : 5,780.88 = 1,256.85 : x
  2. Step 2: Convert to fraction form
    3,853.91/5,780.88 = 1,256.85/x
  3. Step 3: Cross multiply
    3,853.91x = 5,780.88 × 1,256.85
  4. Step 4: Simplify right side
    3,853.91x = 7,265,663.84
  5. Step 5: Solve for x
    x = 7,265,663.84/3,853.91
  6. Step 6: Final answer
    x = 1,885.27

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Similar ratio
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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.