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Finding the Fourth Proportional to 4,654.40, 6,422.40 and 2,664.64

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Solution

The fourth proportional to 4,654.40, 6,422.40 and 2,664.64 is: 3,676.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,654.40 : 6,422.40 = 2,664.64 : x
  2. Step 2: Convert to fraction form
    4,654.40/6,422.40 = 2,664.64/x
  3. Step 3: Cross multiply
    4,654.40x = 6,422.40 × 2,664.64
  4. Step 4: Simplify right side
    4,654.40x = 17,113,383.94
  5. Step 5: Solve for x
    x = 17,113,383.94/4,654.40
  6. Step 6: Final answer
    x = 3,676.82

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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.