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Finding the Fourth Proportional to 8,676.47, 13,012.65 and 4,976.79

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Solution

The fourth proportional to 8,676.47, 13,012.65 and 4,976.79 is: 7,464.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.47 : 13,012.65 = 4,976.79 : x
  2. Step 2: Convert to fraction form
    8,676.47/13,012.65 = 4,976.79/x
  3. Step 3: Cross multiply
    8,676.47x = 13,012.65 × 4,976.79
  4. Step 4: Simplify right side
    8,676.47x = 64,761,250.79
  5. Step 5: Solve for x
    x = 64,761,250.79/8,676.47
  6. Step 6: Final answer
    x = 7,464.01

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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.