Home / 3,328.30-4,992.64-1,380.64

Finding the Fourth Proportional to 3,328.30, 4,992.64 and 1,380.64

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Solution

The fourth proportional to 3,328.30, 4,992.64 and 1,380.64 is: 2,071.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,328.30 : 4,992.64 = 1,380.64 : x
  2. Step 2: Convert to fraction form
    3,328.30/4,992.64 = 1,380.64/x
  3. Step 3: Cross multiply
    3,328.30x = 4,992.64 × 1,380.64
  4. Step 4: Simplify right side
    3,328.30x = 6,893,038.49
  5. Step 5: Solve for x
    x = 6,893,038.49/3,328.30
  6. Step 6: Final answer
    x = 2,071.04

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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.