Home / 2,416.57-3,620.70-1,321.72

Finding the Fourth Proportional to 2,416.57, 3,620.70 and 1,321.72

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Solution

The fourth proportional to 2,416.57, 3,620.70 and 1,321.72 is: 1,980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,416.57 : 3,620.70 = 1,321.72 : x
  2. Step 2: Convert to fraction form
    2,416.57/3,620.70 = 1,321.72/x
  3. Step 3: Cross multiply
    2,416.57x = 3,620.70 × 1,321.72
  4. Step 4: Simplify right side
    2,416.57x = 4,785,542.55
  5. Step 5: Solve for x
    x = 4,785,542.55/2,416.57
  6. Step 6: Final answer
    x = 1,980.31

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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.