Home / 3,887.88-5,363.74-2,185.99

Finding the Fourth Proportional to 3,887.88, 5,363.74 and 2,185.99

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Solution

The fourth proportional to 3,887.88, 5,363.74 and 2,185.99 is: 3,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.88 : 5,363.74 = 2,185.99 : x
  2. Step 2: Convert to fraction form
    3,887.88/5,363.74 = 2,185.99/x
  3. Step 3: Cross multiply
    3,887.88x = 5,363.74 × 2,185.99
  4. Step 4: Simplify right side
    3,887.88x = 11,725,071.33
  5. Step 5: Solve for x
    x = 11,725,071.33/3,887.88
  6. Step 6: Final answer
    x = 3,015.80

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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.