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Finding the Fourth Proportional to 4,650.88, 6,979.52 and 4,242.56

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Solution

The fourth proportional to 4,650.88, 6,979.52 and 4,242.56 is: 6,366.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,650.88 : 6,979.52 = 4,242.56 : x
  2. Step 2: Convert to fraction form
    4,650.88/6,979.52 = 4,242.56/x
  3. Step 3: Cross multiply
    4,650.88x = 6,979.52 × 4,242.56
  4. Step 4: Simplify right side
    4,650.88x = 29,611,032.37
  5. Step 5: Solve for x
    x = 29,611,032.37/4,650.88
  6. Step 6: Final answer
    x = 6,366.76

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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.