Home / 2,187.32-3,016.94-2,115

Finding the Fourth Proportional to 2,187.32, 3,016.94 and 2,115

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Solution

The fourth proportional to 2,187.32, 3,016.94 and 2,115 is: 2,917.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.32 : 3,016.94 = 2,115 : x
  2. Step 2: Convert to fraction form
    2,187.32/3,016.94 = 2,115/x
  3. Step 3: Cross multiply
    2,187.32x = 3,016.94 × 2,115
  4. Step 4: Simplify right side
    2,187.32x = 6,380,817.53
  5. Step 5: Solve for x
    x = 6,380,817.53/2,187.32
  6. Step 6: Final answer
    x = 2,917.19

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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.