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Finding the Fourth Proportional to 6,470.75, 8,929.64 and 3,676.79

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Solution

The fourth proportional to 6,470.75, 8,929.64 and 3,676.79 is: 5,073.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,470.75 : 8,929.64 = 3,676.79 : x
  2. Step 2: Convert to fraction form
    6,470.75/8,929.64 = 3,676.79/x
  3. Step 3: Cross multiply
    6,470.75x = 8,929.64 × 3,676.79
  4. Step 4: Simplify right side
    6,470.75x = 32,832,392.67
  5. Step 5: Solve for x
    x = 32,832,392.67/6,470.75
  6. Step 6: Final answer
    x = 5,073.97

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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.