Home / 3,975.20-5,485.37-2,206.61

Finding the Fourth Proportional to 3,975.20, 5,485.37 and 2,206.61

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Solution

The fourth proportional to 3,975.20, 5,485.37 and 2,206.61 is: 3,044.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.20 : 5,485.37 = 2,206.61 : x
  2. Step 2: Convert to fraction form
    3,975.20/5,485.37 = 2,206.61/x
  3. Step 3: Cross multiply
    3,975.20x = 5,485.37 × 2,206.61
  4. Step 4: Simplify right side
    3,975.20x = 12,104,077.81
  5. Step 5: Solve for x
    x = 12,104,077.81/3,975.20
  6. Step 6: Final answer
    x = 3,044.90

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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.