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Finding the Fourth Proportional to 3,080.87, 4,621.55 and 889.62

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Solution

The fourth proportional to 3,080.87, 4,621.55 and 889.62 is: 1,334.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.87 : 4,621.55 = 889.62 : x
  2. Step 2: Convert to fraction form
    3,080.87/4,621.55 = 889.62/x
  3. Step 3: Cross multiply
    3,080.87x = 4,621.55 × 889.62
  4. Step 4: Simplify right side
    3,080.87x = 4,111,418.86
  5. Step 5: Solve for x
    x = 4,111,418.86/3,080.87
  6. Step 6: Final answer
    x = 1,334.50

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Half scale
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Double scale
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Similar ratio
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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.