Home / 3,318.96-4,980.30-1,240.36

Finding the Fourth Proportional to 3,318.96, 4,980.30 and 1,240.36

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Solution

The fourth proportional to 3,318.96, 4,980.30 and 1,240.36 is: 1,861.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.96 : 4,980.30 = 1,240.36 : x
  2. Step 2: Convert to fraction form
    3,318.96/4,980.30 = 1,240.36/x
  3. Step 3: Cross multiply
    3,318.96x = 4,980.30 × 1,240.36
  4. Step 4: Simplify right side
    3,318.96x = 6,177,364.91
  5. Step 5: Solve for x
    x = 6,177,364.91/3,318.96
  6. Step 6: Final answer
    x = 1,861.24

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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.