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Finding the Fourth Proportional to 3,199.79, 4,393.17 and 3,005.39

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Solution

The fourth proportional to 3,199.79, 4,393.17 and 3,005.39 is: 4,126.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,199.79 : 4,393.17 = 3,005.39 : x
  2. Step 2: Convert to fraction form
    3,199.79/4,393.17 = 3,005.39/x
  3. Step 3: Cross multiply
    3,199.79x = 4,393.17 × 3,005.39
  4. Step 4: Simplify right side
    3,199.79x = 13,203,167.22
  5. Step 5: Solve for x
    x = 13,203,167.22/3,199.79
  6. Step 6: Final answer
    x = 4,126.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.