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Finding the Fourth Proportional to 4,991.50, 6,889.89 and 2,895.22

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Solution

The fourth proportional to 4,991.50, 6,889.89 and 2,895.22 is: 3,996.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.50 : 6,889.89 = 2,895.22 : x
  2. Step 2: Convert to fraction form
    4,991.50/6,889.89 = 2,895.22/x
  3. Step 3: Cross multiply
    4,991.50x = 6,889.89 × 2,895.22
  4. Step 4: Simplify right side
    4,991.50x = 19,947,747.33
  5. Step 5: Solve for x
    x = 19,947,747.33/4,991.50
  6. Step 6: Final answer
    x = 3,996.34

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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.