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Finding the Fourth Proportional to 6,479.14, 8,942.55 and 4,213.32

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Solution

The fourth proportional to 6,479.14, 8,942.55 and 4,213.32 is: 5,815.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.14 : 8,942.55 = 4,213.32 : x
  2. Step 2: Convert to fraction form
    6,479.14/8,942.55 = 4,213.32/x
  3. Step 3: Cross multiply
    6,479.14x = 8,942.55 × 4,213.32
  4. Step 4: Simplify right side
    6,479.14x = 37,677,799.13
  5. Step 5: Solve for x
    x = 37,677,799.13/6,479.14
  6. Step 6: Final answer
    x = 5,815.25

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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.