Home / 3,006.39-4,147.12-2,120.66

Finding the Fourth Proportional to 3,006.39, 4,147.12 and 2,120.66

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Solution

The fourth proportional to 3,006.39, 4,147.12 and 2,120.66 is: 2,925.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,006.39 : 4,147.12 = 2,120.66 : x
  2. Step 2: Convert to fraction form
    3,006.39/4,147.12 = 2,120.66/x
  3. Step 3: Cross multiply
    3,006.39x = 4,147.12 × 2,120.66
  4. Step 4: Simplify right side
    3,006.39x = 8,794,631.50
  5. Step 5: Solve for x
    x = 8,794,631.50/3,006.39
  6. Step 6: Final answer
    x = 2,925.31

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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.