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Finding the Fourth Proportional to 3,230.72, 4,846.19 and 890.91

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Solution

The fourth proportional to 3,230.72, 4,846.19 and 890.91 is: 1,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,230.72 : 4,846.19 = 890.91 : x
  2. Step 2: Convert to fraction form
    3,230.72/4,846.19 = 890.91/x
  3. Step 3: Cross multiply
    3,230.72x = 4,846.19 × 890.91
  4. Step 4: Simplify right side
    3,230.72x = 4,317,519.13
  5. Step 5: Solve for x
    x = 4,317,519.13/3,230.72
  6. Step 6: Final answer
    x = 1,336.40

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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.