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Finding the Fourth Proportional to 7,411.92, 10,212.04 and 4,889.58

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Solution

The fourth proportional to 7,411.92, 10,212.04 and 4,889.58 is: 6,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,411.92 : 10,212.04 = 4,889.58 : x
  2. Step 2: Convert to fraction form
    7,411.92/10,212.04 = 4,889.58/x
  3. Step 3: Cross multiply
    7,411.92x = 10,212.04 × 4,889.58
  4. Step 4: Simplify right side
    7,411.92x = 49,932,586.54
  5. Step 5: Solve for x
    x = 49,932,586.54/7,411.92
  6. Step 6: Final answer
    x = 6,736.80

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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.