Home / 3,887.04-5,363.82-2,118.60

Finding the Fourth Proportional to 3,887.04, 5,363.82 and 2,118.60

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Solution

The fourth proportional to 3,887.04, 5,363.82 and 2,118.60 is: 2,923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.04 : 5,363.82 = 2,118.60 : x
  2. Step 2: Convert to fraction form
    3,887.04/5,363.82 = 2,118.60/x
  3. Step 3: Cross multiply
    3,887.04x = 5,363.82 × 2,118.60
  4. Step 4: Simplify right side
    3,887.04x = 11,363,789.05
  5. Step 5: Solve for x
    x = 11,363,789.05/3,887.04
  6. Step 6: Final answer
    x = 2,923.51

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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.