Home / 3,887.14-5,364.08-2,118.72

Finding the Fourth Proportional to 3,887.14, 5,364.08 and 2,118.72

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Solution

The fourth proportional to 3,887.14, 5,364.08 and 2,118.72 is: 2,923.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.14 : 5,364.08 = 2,118.72 : x
  2. Step 2: Convert to fraction form
    3,887.14/5,364.08 = 2,118.72/x
  3. Step 3: Cross multiply
    3,887.14x = 5,364.08 × 2,118.72
  4. Step 4: Simplify right side
    3,887.14x = 11,364,983.58
  5. Step 5: Solve for x
    x = 11,364,983.58/3,887.14
  6. Step 6: Final answer
    x = 2,923.74

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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.