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Finding the Fourth Proportional to 2,879.80, 4,309.98 and 2,393.80

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Solution

The fourth proportional to 2,879.80, 4,309.98 and 2,393.80 is: 3,582.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.80 : 4,309.98 = 2,393.80 : x
  2. Step 2: Convert to fraction form
    2,879.80/4,309.98 = 2,393.80/x
  3. Step 3: Cross multiply
    2,879.80x = 4,309.98 × 2,393.80
  4. Step 4: Simplify right side
    2,879.80x = 10,317,230.12
  5. Step 5: Solve for x
    x = 10,317,230.12/2,879.80
  6. Step 6: Final answer
    x = 3,582.62

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1.5x scale

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.