Home / 2,879.10-3,973.01-1,620.18

Finding the Fourth Proportional to 2,879.10, 3,973.01 and 1,620.18

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Solution

The fourth proportional to 2,879.10, 3,973.01 and 1,620.18 is: 2,235.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.10 : 3,973.01 = 1,620.18 : x
  2. Step 2: Convert to fraction form
    2,879.10/3,973.01 = 1,620.18/x
  3. Step 3: Cross multiply
    2,879.10x = 3,973.01 × 1,620.18
  4. Step 4: Simplify right side
    2,879.10x = 6,436,983.24
  5. Step 5: Solve for x
    x = 6,436,983.24/2,879.10
  6. Step 6: Final answer
    x = 2,235.76

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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.