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Finding the Fourth Proportional to 3,964.86, 5,472.36 and 2,392.92

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Solution

The fourth proportional to 3,964.86, 5,472.36 and 2,392.92 is: 3,302.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,964.86 : 5,472.36 = 2,392.92 : x
  2. Step 2: Convert to fraction form
    3,964.86/5,472.36 = 2,392.92/x
  3. Step 3: Cross multiply
    3,964.86x = 5,472.36 × 2,392.92
  4. Step 4: Simplify right side
    3,964.86x = 13,094,919.69
  5. Step 5: Solve for x
    x = 13,094,919.69/3,964.86
  6. Step 6: Final answer
    x = 3,302.74

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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.