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Finding the Fourth Proportional to 6,145.39, 8,479.92 and 4,889.62

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Solution

The fourth proportional to 6,145.39, 8,479.92 and 4,889.62 is: 6,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,145.39 : 8,479.92 = 4,889.62 : x
  2. Step 2: Convert to fraction form
    6,145.39/8,479.92 = 4,889.62/x
  3. Step 3: Cross multiply
    6,145.39x = 8,479.92 × 4,889.62
  4. Step 4: Simplify right side
    6,145.39x = 41,463,586.43
  5. Step 5: Solve for x
    x = 41,463,586.43/6,145.39
  6. Step 6: Final answer
    x = 6,747.10

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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.