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Finding the Fourth Proportional to 3,213.34, 4,820.30 and 873.48

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Solution

The fourth proportional to 3,213.34, 4,820.30 and 873.48 is: 1,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.34 : 4,820.30 = 873.48 : x
  2. Step 2: Convert to fraction form
    3,213.34/4,820.30 = 873.48/x
  3. Step 3: Cross multiply
    3,213.34x = 4,820.30 × 873.48
  4. Step 4: Simplify right side
    3,213.34x = 4,210,435.64
  5. Step 5: Solve for x
    x = 4,210,435.64/3,213.34
  6. Step 6: Final answer
    x = 1,310.30

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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.