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Finding the Fourth Proportional to 2,894.78, 3,994.44 and 1,715.96

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Solution

The fourth proportional to 2,894.78, 3,994.44 and 1,715.96 is: 2,367.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,894.78 : 3,994.44 = 1,715.96 : x
  2. Step 2: Convert to fraction form
    2,894.78/3,994.44 = 1,715.96/x
  3. Step 3: Cross multiply
    2,894.78x = 3,994.44 × 1,715.96
  4. Step 4: Simplify right side
    2,894.78x = 6,854,299.26
  5. Step 5: Solve for x
    x = 6,854,299.26/2,894.78
  6. Step 6: Final answer
    x = 2,367.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.