Home / 2,187.15-3,263.79-2,116.14

Finding the Fourth Proportional to 2,187.15, 3,263.79 and 2,116.14

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Solution

The fourth proportional to 2,187.15, 3,263.79 and 2,116.14 is: 3,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.15 : 3,263.79 = 2,116.14 : x
  2. Step 2: Convert to fraction form
    2,187.15/3,263.79 = 2,116.14/x
  3. Step 3: Cross multiply
    2,187.15x = 3,263.79 × 2,116.14
  4. Step 4: Simplify right side
    2,187.15x = 6,906,636.57
  5. Step 5: Solve for x
    x = 6,906,636.57/2,187.15
  6. Step 6: Final answer
    x = 3,157.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.