Home / 3,887.19-5,363.71-2,185.36

Finding the Fourth Proportional to 3,887.19, 5,363.71 and 2,185.36

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Solution

The fourth proportional to 3,887.19, 5,363.71 and 2,185.36 is: 3,015.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.19 : 5,363.71 = 2,185.36 : x
  2. Step 2: Convert to fraction form
    3,887.19/5,363.71 = 2,185.36/x
  3. Step 3: Cross multiply
    3,887.19x = 5,363.71 × 2,185.36
  4. Step 4: Simplify right side
    3,887.19x = 11,721,599.54
  5. Step 5: Solve for x
    x = 11,721,599.54/3,887.19
  6. Step 6: Final answer
    x = 3,015.45

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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.