Home / 3,080.18-4,620.20-889.11

Finding the Fourth Proportional to 3,080.18, 4,620.20 and 889.11

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Solution

The fourth proportional to 3,080.18, 4,620.20 and 889.11 is: 1,333.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.18 : 4,620.20 = 889.11 : x
  2. Step 2: Convert to fraction form
    3,080.18/4,620.20 = 889.11/x
  3. Step 3: Cross multiply
    3,080.18x = 4,620.20 × 889.11
  4. Step 4: Simplify right side
    3,080.18x = 4,107,861.58
  5. Step 5: Solve for x
    x = 4,107,861.58/3,080.18
  6. Step 6: Final answer
    x = 1,333.64

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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.