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Finding the Fourth Proportional to 4,879.64, 6,731.01 and 2,992.07

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Solution

The fourth proportional to 4,879.64, 6,731.01 and 2,992.07 is: 4,127.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.64 : 6,731.01 = 2,992.07 : x
  2. Step 2: Convert to fraction form
    4,879.64/6,731.01 = 2,992.07/x
  3. Step 3: Cross multiply
    4,879.64x = 6,731.01 × 2,992.07
  4. Step 4: Simplify right side
    4,879.64x = 20,139,653.09
  5. Step 5: Solve for x
    x = 20,139,653.09/4,879.64
  6. Step 6: Final answer
    x = 4,127.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.