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Finding the Fourth Proportional to 3,392.78, 5,055.86 and 3,281.30

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Solution

The fourth proportional to 3,392.78, 5,055.86 and 3,281.30 is: 4,889.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.78 : 5,055.86 = 3,281.30 : x
  2. Step 2: Convert to fraction form
    3,392.78/5,055.86 = 3,281.30/x
  3. Step 3: Cross multiply
    3,392.78x = 5,055.86 × 3,281.30
  4. Step 4: Simplify right side
    3,392.78x = 16,589,751.73
  5. Step 5: Solve for x
    x = 16,589,751.73/3,392.78
  6. Step 6: Final answer
    x = 4,889.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.