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Finding the Fourth Proportional to 3,485.91, 5,228.85 and 888.87

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Solution

The fourth proportional to 3,485.91, 5,228.85 and 888.87 is: 1,333.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.91 : 5,228.85 = 888.87 : x
  2. Step 2: Convert to fraction form
    3,485.91/5,228.85 = 888.87/x
  3. Step 3: Cross multiply
    3,485.91x = 5,228.85 × 888.87
  4. Step 4: Simplify right side
    3,485.91x = 4,647,767.90
  5. Step 5: Solve for x
    x = 4,647,767.90/3,485.91
  6. Step 6: Final answer
    x = 1,333.30

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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.