Home / 3,081.24-4,621.68-889.92

Finding the Fourth Proportional to 3,081.24, 4,621.68 and 889.92

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Solution

The fourth proportional to 3,081.24, 4,621.68 and 889.92 is: 1,334.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.24 : 4,621.68 = 889.92 : x
  2. Step 2: Convert to fraction form
    3,081.24/4,621.68 = 889.92/x
  3. Step 3: Cross multiply
    3,081.24x = 4,621.68 × 889.92
  4. Step 4: Simplify right side
    3,081.24x = 4,112,925.47
  5. Step 5: Solve for x
    x = 4,112,925.47/3,081.24
  6. Step 6: Final answer
    x = 1,334.83

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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.