Home / 8,979.47-13,470.63-2,738.05

Finding the Fourth Proportional to 8,979.47, 13,470.63 and 2,738.05

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Solution

The fourth proportional to 8,979.47, 13,470.63 and 2,738.05 is: 4,107.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.47 : 13,470.63 = 2,738.05 : x
  2. Step 2: Convert to fraction form
    8,979.47/13,470.63 = 2,738.05/x
  3. Step 3: Cross multiply
    8,979.47x = 13,470.63 × 2,738.05
  4. Step 4: Simplify right side
    8,979.47x = 36,883,258.47
  5. Step 5: Solve for x
    x = 36,883,258.47/8,979.47
  6. Step 6: Final answer
    x = 4,107.51

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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.