Home / 4,120.60-5,686.42-2,257.56

Finding the Fourth Proportional to 4,120.60, 5,686.42 and 2,257.56

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Solution

The fourth proportional to 4,120.60, 5,686.42 and 2,257.56 is: 3,115.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.60 : 5,686.42 = 2,257.56 : x
  2. Step 2: Convert to fraction form
    4,120.60/5,686.42 = 2,257.56/x
  3. Step 3: Cross multiply
    4,120.60x = 5,686.42 × 2,257.56
  4. Step 4: Simplify right side
    4,120.60x = 12,837,434.34
  5. Step 5: Solve for x
    x = 12,837,434.34/4,120.60
  6. Step 6: Final answer
    x = 3,115.43

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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.