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Finding the Fourth Proportional to 3,230.70, 4,846.08 and 890.75

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Solution

The fourth proportional to 3,230.70, 4,846.08 and 890.75 is: 1,336.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,230.70 : 4,846.08 = 890.75 : x
  2. Step 2: Convert to fraction form
    3,230.70/4,846.08 = 890.75/x
  3. Step 3: Cross multiply
    3,230.70x = 4,846.08 × 890.75
  4. Step 4: Simplify right side
    3,230.70x = 4,316,621.53
  5. Step 5: Solve for x
    x = 4,316,621.53/3,230.70
  6. Step 6: Final answer
    x = 1,336.13

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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.