Home / 3,126.72-4,662.16-2,783.28

Finding the Fourth Proportional to 3,126.72, 4,662.16 and 2,783.28

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Solution

The fourth proportional to 3,126.72, 4,662.16 and 2,783.28 is: 4,150.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.72 : 4,662.16 = 2,783.28 : x
  2. Step 2: Convert to fraction form
    3,126.72/4,662.16 = 2,783.28/x
  3. Step 3: Cross multiply
    3,126.72x = 4,662.16 × 2,783.28
  4. Step 4: Simplify right side
    3,126.72x = 12,976,096.68
  5. Step 5: Solve for x
    x = 12,976,096.68/3,126.72
  6. Step 6: Final answer
    x = 4,150.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.