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Finding the Fourth Proportional to 3,392.92, 4,682.28 and 1,900.64

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Solution

The fourth proportional to 3,392.92, 4,682.28 and 1,900.64 is: 2,622.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.92 : 4,682.28 = 1,900.64 : x
  2. Step 2: Convert to fraction form
    3,392.92/4,682.28 = 1,900.64/x
  3. Step 3: Cross multiply
    3,392.92x = 4,682.28 × 1,900.64
  4. Step 4: Simplify right side
    3,392.92x = 8,899,328.66
  5. Step 5: Solve for x
    x = 8,899,328.66/3,392.92
  6. Step 6: Final answer
    x = 2,622.91

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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.