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Finding the Fourth Proportional to 4,978.97, 7,461.97 and 2,512.45

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Solution

The fourth proportional to 4,978.97, 7,461.97 and 2,512.45 is: 3,765.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.97 : 7,461.97 = 2,512.45 : x
  2. Step 2: Convert to fraction form
    4,978.97/7,461.97 = 2,512.45/x
  3. Step 3: Cross multiply
    4,978.97x = 7,461.97 × 2,512.45
  4. Step 4: Simplify right side
    4,978.97x = 18,747,801.59
  5. Step 5: Solve for x
    x = 18,747,801.59/4,978.97
  6. Step 6: Final answer
    x = 3,765.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.