Home / 3,208.32-4,812.72-1,128.48

Finding the Fourth Proportional to 3,208.32, 4,812.72 and 1,128.48

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Solution

The fourth proportional to 3,208.32, 4,812.72 and 1,128.48 is: 1,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.32 : 4,812.72 = 1,128.48 : x
  2. Step 2: Convert to fraction form
    3,208.32/4,812.72 = 1,128.48/x
  3. Step 3: Cross multiply
    3,208.32x = 4,812.72 × 1,128.48
  4. Step 4: Simplify right side
    3,208.32x = 5,431,058.27
  5. Step 5: Solve for x
    x = 5,431,058.27/3,208.32
  6. Step 6: Final answer
    x = 1,692.80

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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.