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Finding the Fourth Proportional to 3,978.24, 5,967.47 and 1,898.46

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Solution

The fourth proportional to 3,978.24, 5,967.47 and 1,898.46 is: 2,847.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,978.24 : 5,967.47 = 1,898.46 : x
  2. Step 2: Convert to fraction form
    3,978.24/5,967.47 = 1,898.46/x
  3. Step 3: Cross multiply
    3,978.24x = 5,967.47 × 1,898.46
  4. Step 4: Simplify right side
    3,978.24x = 11,329,007.84
  5. Step 5: Solve for x
    x = 11,329,007.84/3,978.24
  6. Step 6: Final answer
    x = 2,847.75

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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.