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Finding the Fourth Proportional to 3,208.56, 4,812.60 and 900.24

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Solution

The fourth proportional to 3,208.56, 4,812.60 and 900.24 is: 1,350.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.56 : 4,812.60 = 900.24 : x
  2. Step 2: Convert to fraction form
    3,208.56/4,812.60 = 900.24/x
  3. Step 3: Cross multiply
    3,208.56x = 4,812.60 × 900.24
  4. Step 4: Simplify right side
    3,208.56x = 4,332,495.02
  5. Step 5: Solve for x
    x = 4,332,495.02/3,208.56
  6. Step 6: Final answer
    x = 1,350.29

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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.