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Finding the Fourth Proportional to 3,115.92, 4,672.92 and 1,141.32

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Solution

The fourth proportional to 3,115.92, 4,672.92 and 1,141.32 is: 1,711.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.92 : 4,672.92 = 1,141.32 : x
  2. Step 2: Convert to fraction form
    3,115.92/4,672.92 = 1,141.32/x
  3. Step 3: Cross multiply
    3,115.92x = 4,672.92 × 1,141.32
  4. Step 4: Simplify right side
    3,115.92x = 5,333,297.05
  5. Step 5: Solve for x
    x = 5,333,297.05/3,115.92
  6. Step 6: Final answer
    x = 1,711.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.