Home / 2,186.16-3,279.12-887.28

Finding the Fourth Proportional to 2,186.16, 3,279.12 and 887.28

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Solution

The fourth proportional to 2,186.16, 3,279.12 and 887.28 is: 1,330.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.16 : 3,279.12 = 887.28 : x
  2. Step 2: Convert to fraction form
    2,186.16/3,279.12 = 887.28/x
  3. Step 3: Cross multiply
    2,186.16x = 3,279.12 × 887.28
  4. Step 4: Simplify right side
    2,186.16x = 2,909,497.59
  5. Step 5: Solve for x
    x = 2,909,497.59/2,186.16
  6. Step 6: Final answer
    x = 1,330.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.