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Finding the Fourth Proportional to 4,989.97, 6,886.44 and 2,865.49

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Solution

The fourth proportional to 4,989.97, 6,886.44 and 2,865.49 is: 3,954.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.97 : 6,886.44 = 2,865.49 : x
  2. Step 2: Convert to fraction form
    4,989.97/6,886.44 = 2,865.49/x
  3. Step 3: Cross multiply
    4,989.97x = 6,886.44 × 2,865.49
  4. Step 4: Simplify right side
    4,989.97x = 19,732,976.20
  5. Step 5: Solve for x
    x = 19,732,976.20/4,989.97
  6. Step 6: Final answer
    x = 3,954.53

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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.