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Finding the Fourth Proportional to 2,979.32, 4,467.22 and 1,993.22

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Solution

The fourth proportional to 2,979.32, 4,467.22 and 1,993.22 is: 2,988.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.32 : 4,467.22 = 1,993.22 : x
  2. Step 2: Convert to fraction form
    2,979.32/4,467.22 = 1,993.22/x
  3. Step 3: Cross multiply
    2,979.32x = 4,467.22 × 1,993.22
  4. Step 4: Simplify right side
    2,979.32x = 8,904,152.25
  5. Step 5: Solve for x
    x = 8,904,152.25/2,979.32
  6. Step 6: Final answer
    x = 2,988.65

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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.