Home / 3,975.18-5,485.77-2,206.82

Finding the Fourth Proportional to 3,975.18, 5,485.77 and 2,206.82

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Solution

The fourth proportional to 3,975.18, 5,485.77 and 2,206.82 is: 3,045.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.18 : 5,485.77 = 2,206.82 : x
  2. Step 2: Convert to fraction form
    3,975.18/5,485.77 = 2,206.82/x
  3. Step 3: Cross multiply
    3,975.18x = 5,485.77 × 2,206.82
  4. Step 4: Simplify right side
    3,975.18x = 12,106,106.95
  5. Step 5: Solve for x
    x = 12,106,106.95/3,975.18
  6. Step 6: Final answer
    x = 3,045.42

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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.