Home / 3,887.31-5,364.48-2,118.91

Finding the Fourth Proportional to 3,887.31, 5,364.48 and 2,118.91

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Solution

The fourth proportional to 3,887.31, 5,364.48 and 2,118.91 is: 2,924.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.31 : 5,364.48 = 2,118.91 : x
  2. Step 2: Convert to fraction form
    3,887.31/5,364.48 = 2,118.91/x
  3. Step 3: Cross multiply
    3,887.31x = 5,364.48 × 2,118.91
  4. Step 4: Simplify right side
    3,887.31x = 11,366,850.32
  5. Step 5: Solve for x
    x = 11,366,850.32/3,887.31
  6. Step 6: Final answer
    x = 2,924.09

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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.