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Finding the Fourth Proportional to 2,879.03, 3,972.98 and 1,620.16

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Solution

The fourth proportional to 2,879.03, 3,972.98 and 1,620.16 is: 2,235.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.03 : 3,972.98 = 1,620.16 : x
  2. Step 2: Convert to fraction form
    2,879.03/3,972.98 = 1,620.16/x
  3. Step 3: Cross multiply
    2,879.03x = 3,972.98 × 1,620.16
  4. Step 4: Simplify right side
    2,879.03x = 6,436,835.31
  5. Step 5: Solve for x
    x = 6,436,835.31/2,879.03
  6. Step 6: Final answer
    x = 2,235.77

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1.5x scale

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.