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Finding the Fourth Proportional to 3,644.69, 5,029.98 and 2,979.68

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Solution

The fourth proportional to 3,644.69, 5,029.98 and 2,979.68 is: 4,112.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,644.69 : 5,029.98 = 2,979.68 : x
  2. Step 2: Convert to fraction form
    3,644.69/5,029.98 = 2,979.68/x
  3. Step 3: Cross multiply
    3,644.69x = 5,029.98 × 2,979.68
  4. Step 4: Simplify right side
    3,644.69x = 14,987,730.81
  5. Step 5: Solve for x
    x = 14,987,730.81/3,644.69
  6. Step 6: Final answer
    x = 4,112.21

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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.