Home / 3,828.78-5,280.48-3,234.20

Finding the Fourth Proportional to 3,828.78, 5,280.48 and 3,234.20

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Solution

The fourth proportional to 3,828.78, 5,280.48 and 3,234.20 is: 4,460.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.78 : 5,280.48 = 3,234.20 : x
  2. Step 2: Convert to fraction form
    3,828.78/5,280.48 = 3,234.20/x
  3. Step 3: Cross multiply
    3,828.78x = 5,280.48 × 3,234.20
  4. Step 4: Simplify right side
    3,828.78x = 17,078,102.01
  5. Step 5: Solve for x
    x = 17,078,102.01/3,828.78
  6. Step 6: Final answer
    x = 4,460.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.