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Finding the Fourth Proportional to 2,124.08, 3,186.49 and 662.86

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Solution

The fourth proportional to 2,124.08, 3,186.49 and 662.86 is: 994.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.08 : 3,186.49 = 662.86 : x
  2. Step 2: Convert to fraction form
    2,124.08/3,186.49 = 662.86/x
  3. Step 3: Cross multiply
    2,124.08x = 3,186.49 × 662.86
  4. Step 4: Simplify right side
    2,124.08x = 2,112,196.76
  5. Step 5: Solve for x
    x = 2,112,196.76/2,124.08
  6. Step 6: Final answer
    x = 994.41

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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.