Home / 4,589.10-6,879.78-1,990.08

Finding the Fourth Proportional to 4,589.10, 6,879.78 and 1,990.08

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Solution

The fourth proportional to 4,589.10, 6,879.78 and 1,990.08 is: 2,983.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,589.10 : 6,879.78 = 1,990.08 : x
  2. Step 2: Convert to fraction form
    4,589.10/6,879.78 = 1,990.08/x
  3. Step 3: Cross multiply
    4,589.10x = 6,879.78 × 1,990.08
  4. Step 4: Simplify right side
    4,589.10x = 13,691,312.58
  5. Step 5: Solve for x
    x = 13,691,312.58/4,589.10
  6. Step 6: Final answer
    x = 2,983.44

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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.