Home / 2,589.20-3,879.48-1,818.32

Finding the Fourth Proportional to 2,589.20, 3,879.48 and 1,818.32

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Solution

The fourth proportional to 2,589.20, 3,879.48 and 1,818.32 is: 2,724.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.20 : 3,879.48 = 1,818.32 : x
  2. Step 2: Convert to fraction form
    2,589.20/3,879.48 = 1,818.32/x
  3. Step 3: Cross multiply
    2,589.20x = 3,879.48 × 1,818.32
  4. Step 4: Simplify right side
    2,589.20x = 7,054,136.07
  5. Step 5: Solve for x
    x = 7,054,136.07/2,589.20
  6. Step 6: Final answer
    x = 2,724.45

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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.