Home / 3,318.96-4,979.40-3,313.20

Finding the Fourth Proportional to 3,318.96, 4,979.40 and 3,313.20

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Solution

The fourth proportional to 3,318.96, 4,979.40 and 3,313.20 is: 4,970.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.96 : 4,979.40 = 3,313.20 : x
  2. Step 2: Convert to fraction form
    3,318.96/4,979.40 = 3,313.20/x
  3. Step 3: Cross multiply
    3,318.96x = 4,979.40 × 3,313.20
  4. Step 4: Simplify right side
    3,318.96x = 16,497,748.08
  5. Step 5: Solve for x
    x = 16,497,748.08/3,318.96
  6. Step 6: Final answer
    x = 4,970.76

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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.