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Finding the Fourth Proportional to 2,447.86, 3,671.79 and 1,720.69

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Solution

The fourth proportional to 2,447.86, 3,671.79 and 1,720.69 is: 2,581.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.86 : 3,671.79 = 1,720.69 : x
  2. Step 2: Convert to fraction form
    2,447.86/3,671.79 = 1,720.69/x
  3. Step 3: Cross multiply
    2,447.86x = 3,671.79 × 1,720.69
  4. Step 4: Simplify right side
    2,447.86x = 6,318,012.34
  5. Step 5: Solve for x
    x = 6,318,012.34/2,447.86
  6. Step 6: Final answer
    x = 2,581.04

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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.