Home / 3,318.93-4,980.65-1,371.12

Finding the Fourth Proportional to 3,318.93, 4,980.65 and 1,371.12

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Solution

The fourth proportional to 3,318.93, 4,980.65 and 1,371.12 is: 2,057.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.93 : 4,980.65 = 1,371.12 : x
  2. Step 2: Convert to fraction form
    3,318.93/4,980.65 = 1,371.12/x
  3. Step 3: Cross multiply
    3,318.93x = 4,980.65 × 1,371.12
  4. Step 4: Simplify right side
    3,318.93x = 6,829,037.07
  5. Step 5: Solve for x
    x = 6,829,037.07/3,318.93
  6. Step 6: Final answer
    x = 2,057.61

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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.