Home / 3,886.85-5,364.14-2,185.56

Finding the Fourth Proportional to 3,886.85, 5,364.14 and 2,185.56

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Solution

The fourth proportional to 3,886.85, 5,364.14 and 2,185.56 is: 3,016.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.85 : 5,364.14 = 2,185.56 : x
  2. Step 2: Convert to fraction form
    3,886.85/5,364.14 = 2,185.56/x
  3. Step 3: Cross multiply
    3,886.85x = 5,364.14 × 2,185.56
  4. Step 4: Simplify right side
    3,886.85x = 11,723,638.89
  5. Step 5: Solve for x
    x = 11,723,638.89/3,886.85
  6. Step 6: Final answer
    x = 3,016.24

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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.