Home / 3,885.21-5,357.97-2,556.61

Finding the Fourth Proportional to 3,885.21, 5,357.97 and 2,556.61

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Solution

The fourth proportional to 3,885.21, 5,357.97 and 2,556.61 is: 3,525.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.21 : 5,357.97 = 2,556.61 : x
  2. Step 2: Convert to fraction form
    3,885.21/5,357.97 = 2,556.61/x
  3. Step 3: Cross multiply
    3,885.21x = 5,357.97 × 2,556.61
  4. Step 4: Simplify right side
    3,885.21x = 13,698,226.29
  5. Step 5: Solve for x
    x = 13,698,226.29/3,885.21
  6. Step 6: Final answer
    x = 3,525.74

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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.