Home / 8,979.31-13,469.73-2,740.72

Finding the Fourth Proportional to 8,979.31, 13,469.73 and 2,740.72

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Solution

The fourth proportional to 8,979.31, 13,469.73 and 2,740.72 is: 4,111.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.31 : 13,469.73 = 2,740.72 : x
  2. Step 2: Convert to fraction form
    8,979.31/13,469.73 = 2,740.72/x
  3. Step 3: Cross multiply
    8,979.31x = 13,469.73 × 2,740.72
  4. Step 4: Simplify right side
    8,979.31x = 36,916,758.41
  5. Step 5: Solve for x
    x = 36,916,758.41/8,979.31
  6. Step 6: Final answer
    x = 4,111.31

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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.