Home / 3,888.81-5,364.97-2,208.85

Finding the Fourth Proportional to 3,888.81, 5,364.97 and 2,208.85

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Solution

The fourth proportional to 3,888.81, 5,364.97 and 2,208.85 is: 3,047.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.81 : 5,364.97 = 2,208.85 : x
  2. Step 2: Convert to fraction form
    3,888.81/5,364.97 = 2,208.85/x
  3. Step 3: Cross multiply
    3,888.81x = 5,364.97 × 2,208.85
  4. Step 4: Simplify right side
    3,888.81x = 11,850,395.05
  5. Step 5: Solve for x
    x = 11,850,395.05/3,888.81
  6. Step 6: Final answer
    x = 3,047.31

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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.