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Finding the Fourth Proportional to 3,475.36, 5,213.01 and 878.30

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Solution

The fourth proportional to 3,475.36, 5,213.01 and 878.30 is: 1,317.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,475.36 : 5,213.01 = 878.30 : x
  2. Step 2: Convert to fraction form
    3,475.36/5,213.01 = 878.30/x
  3. Step 3: Cross multiply
    3,475.36x = 5,213.01 × 878.30
  4. Step 4: Simplify right side
    3,475.36x = 4,578,586.68
  5. Step 5: Solve for x
    x = 4,578,586.68/3,475.36
  6. Step 6: Final answer
    x = 1,317.44

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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.