Home / 3,517.76-4,854.72-2,120.64

Finding the Fourth Proportional to 3,517.76, 4,854.72 and 2,120.64

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Solution

The fourth proportional to 3,517.76, 4,854.72 and 2,120.64 is: 2,926.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,517.76 : 4,854.72 = 2,120.64 : x
  2. Step 2: Convert to fraction form
    3,517.76/4,854.72 = 2,120.64/x
  3. Step 3: Cross multiply
    3,517.76x = 4,854.72 × 2,120.64
  4. Step 4: Simplify right side
    3,517.76x = 10,295,113.42
  5. Step 5: Solve for x
    x = 10,295,113.42/3,517.76
  6. Step 6: Final answer
    x = 2,926.61

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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.