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Finding the Fourth Proportional to 5,411.92, 7,467.94 and 3,021.80

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Solution

The fourth proportional to 5,411.92, 7,467.94 and 3,021.80 is: 4,169.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.92 : 7,467.94 = 3,021.80 : x
  2. Step 2: Convert to fraction form
    5,411.92/7,467.94 = 3,021.80/x
  3. Step 3: Cross multiply
    5,411.92x = 7,467.94 × 3,021.80
  4. Step 4: Simplify right side
    5,411.92x = 22,566,621.09
  5. Step 5: Solve for x
    x = 22,566,621.09/5,411.92
  6. Step 6: Final answer
    x = 4,169.80

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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.