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Finding the Fourth Proportional to 4,660.65, 6,979.01 and 2,578.32

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Solution

The fourth proportional to 4,660.65, 6,979.01 and 2,578.32 is: 3,860.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,660.65 : 6,979.01 = 2,578.32 : x
  2. Step 2: Convert to fraction form
    4,660.65/6,979.01 = 2,578.32/x
  3. Step 3: Cross multiply
    4,660.65x = 6,979.01 × 2,578.32
  4. Step 4: Simplify right side
    4,660.65x = 17,994,108.17
  5. Step 5: Solve for x
    x = 17,994,108.17/4,660.65
  6. Step 6: Final answer
    x = 3,860.86

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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.