Home / 3,887.28-5,364.44-2,118.98

Finding the Fourth Proportional to 3,887.28, 5,364.44 and 2,118.98

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Solution

The fourth proportional to 3,887.28, 5,364.44 and 2,118.98 is: 2,924.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.28 : 5,364.44 = 2,118.98 : x
  2. Step 2: Convert to fraction form
    3,887.28/5,364.44 = 2,118.98/x
  3. Step 3: Cross multiply
    3,887.28x = 5,364.44 × 2,118.98
  4. Step 4: Simplify right side
    3,887.28x = 11,367,103.65
  5. Step 5: Solve for x
    x = 11,367,103.65/3,887.28
  6. Step 6: Final answer
    x = 2,924.18

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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.