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Finding the Fourth Proportional to 4,991.85, 6,889.10 and 2,867.73

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Solution

The fourth proportional to 4,991.85, 6,889.10 and 2,867.73 is: 3,957.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.85 : 6,889.10 = 2,867.73 : x
  2. Step 2: Convert to fraction form
    4,991.85/6,889.10 = 2,867.73/x
  3. Step 3: Cross multiply
    4,991.85x = 6,889.10 × 2,867.73
  4. Step 4: Simplify right side
    4,991.85x = 19,756,064.40
  5. Step 5: Solve for x
    x = 19,756,064.40/4,991.85
  6. Step 6: Final answer
    x = 3,957.66

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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.