Home / 3,305.28-4,961.52-2,978.40

Finding the Fourth Proportional to 3,305.28, 4,961.52 and 2,978.40

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Solution

The fourth proportional to 3,305.28, 4,961.52 and 2,978.40 is: 4,470.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,305.28 : 4,961.52 = 2,978.40 : x
  2. Step 2: Convert to fraction form
    3,305.28/4,961.52 = 2,978.40/x
  3. Step 3: Cross multiply
    3,305.28x = 4,961.52 × 2,978.40
  4. Step 4: Simplify right side
    3,305.28x = 14,777,391.17
  5. Step 5: Solve for x
    x = 14,777,391.17/3,305.28
  6. Step 6: Final answer
    x = 4,470.84

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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.