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Finding the Fourth Proportional to 4,991.05, 6,886.13 and 2,894.77

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Solution

The fourth proportional to 4,991.05, 6,886.13 and 2,894.77 is: 3,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.05 : 6,886.13 = 2,894.77 : x
  2. Step 2: Convert to fraction form
    4,991.05/6,886.13 = 2,894.77/x
  3. Step 3: Cross multiply
    4,991.05x = 6,886.13 × 2,894.77
  4. Step 4: Simplify right side
    4,991.05x = 19,933,735.35
  5. Step 5: Solve for x
    x = 19,933,735.35/4,991.05
  6. Step 6: Final answer
    x = 3,993.90

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1.5x scale

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.