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Finding the Fourth Proportional to 2,188.16, 3,279 and 888.56

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Solution

The fourth proportional to 2,188.16, 3,279 and 888.56 is: 1,331.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.16 : 3,279 = 888.56 : x
  2. Step 2: Convert to fraction form
    2,188.16/3,279 = 888.56/x
  3. Step 3: Cross multiply
    2,188.16x = 3,279 × 888.56
  4. Step 4: Simplify right side
    2,188.16x = 2,913,588.24
  5. Step 5: Solve for x
    x = 2,913,588.24/2,188.16
  6. Step 6: Final answer
    x = 1,331.52

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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.