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Finding the Fourth Proportional to 3,969.09, 5,477.09 and 2,200.70

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Solution

The fourth proportional to 3,969.09, 5,477.09 and 2,200.70 is: 3,036.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.09 : 5,477.09 = 2,200.70 : x
  2. Step 2: Convert to fraction form
    3,969.09/5,477.09 = 2,200.70/x
  3. Step 3: Cross multiply
    3,969.09x = 5,477.09 × 2,200.70
  4. Step 4: Simplify right side
    3,969.09x = 12,053,393.57
  5. Step 5: Solve for x
    x = 12,053,393.57/3,969.09
  6. Step 6: Final answer
    x = 3,036.82

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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.