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Finding the Fourth Proportional to 4,787.22, 6,606.40 and 2,662.78

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Solution

The fourth proportional to 4,787.22, 6,606.40 and 2,662.78 is: 3,674.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.22 : 6,606.40 = 2,662.78 : x
  2. Step 2: Convert to fraction form
    4,787.22/6,606.40 = 2,662.78/x
  3. Step 3: Cross multiply
    4,787.22x = 6,606.40 × 2,662.78
  4. Step 4: Simplify right side
    4,787.22x = 17,591,389.79
  5. Step 5: Solve for x
    x = 17,591,389.79/4,787.22
  6. Step 6: Final answer
    x = 3,674.66

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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.