Home / 3,435.24-5,152.80-838.20

Finding the Fourth Proportional to 3,435.24, 5,152.80 and 838.20

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Solution

The fourth proportional to 3,435.24, 5,152.80 and 838.20 is: 1,257.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,435.24 : 5,152.80 = 838.20 : x
  2. Step 2: Convert to fraction form
    3,435.24/5,152.80 = 838.20/x
  3. Step 3: Cross multiply
    3,435.24x = 5,152.80 × 838.20
  4. Step 4: Simplify right side
    3,435.24x = 4,319,076.96
  5. Step 5: Solve for x
    x = 4,319,076.96/3,435.24
  6. Step 6: Final answer
    x = 1,257.29

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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.