Home / 3,942.63-5,440.64-2,618.75

Finding the Fourth Proportional to 3,942.63, 5,440.64 and 2,618.75

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Solution

The fourth proportional to 3,942.63, 5,440.64 and 2,618.75 is: 3,613.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.63 : 5,440.64 = 2,618.75 : x
  2. Step 2: Convert to fraction form
    3,942.63/5,440.64 = 2,618.75/x
  3. Step 3: Cross multiply
    3,942.63x = 5,440.64 × 2,618.75
  4. Step 4: Simplify right side
    3,942.63x = 14,247,635.70
  5. Step 5: Solve for x
    x = 14,247,635.70/3,942.63
  6. Step 6: Final answer
    x = 3,613.74

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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.