Home / 3,081.14-4,620.31-889.35

Finding the Fourth Proportional to 3,081.14, 4,620.31 and 889.35

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Solution

The fourth proportional to 3,081.14, 4,620.31 and 889.35 is: 1,333.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.14 : 4,620.31 = 889.35 : x
  2. Step 2: Convert to fraction form
    3,081.14/4,620.31 = 889.35/x
  3. Step 3: Cross multiply
    3,081.14x = 4,620.31 × 889.35
  4. Step 4: Simplify right side
    3,081.14x = 4,109,053.15
  5. Step 5: Solve for x
    x = 4,109,053.15/3,081.14
  6. Step 6: Final answer
    x = 1,333.62

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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.