Home / 2,974.80-4,105.28-1,715.64

Finding the Fourth Proportional to 2,974.80, 4,105.28 and 1,715.64

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Solution

The fourth proportional to 2,974.80, 4,105.28 and 1,715.64 is: 2,367.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.80 : 4,105.28 = 1,715.64 : x
  2. Step 2: Convert to fraction form
    2,974.80/4,105.28 = 1,715.64/x
  3. Step 3: Cross multiply
    2,974.80x = 4,105.28 × 1,715.64
  4. Step 4: Simplify right side
    2,974.80x = 7,043,174.00
  5. Step 5: Solve for x
    x = 7,043,174.00/2,974.80
  6. Step 6: Final answer
    x = 2,367.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.