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Finding the Fourth Proportional to 4,978.35, 7,455.21 and 2,892.03

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Solution

The fourth proportional to 4,978.35, 7,455.21 and 2,892.03 is: 4,330.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.35 : 7,455.21 = 2,892.03 : x
  2. Step 2: Convert to fraction form
    4,978.35/7,455.21 = 2,892.03/x
  3. Step 3: Cross multiply
    4,978.35x = 7,455.21 × 2,892.03
  4. Step 4: Simplify right side
    4,978.35x = 21,560,639.24
  5. Step 5: Solve for x
    x = 21,560,639.24/4,978.35
  6. Step 6: Final answer
    x = 4,330.88

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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.