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Finding the Fourth Proportional to 3,208.53, 4,811.72 and 899.49

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Solution

The fourth proportional to 3,208.53, 4,811.72 and 899.49 is: 1,348.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.53 : 4,811.72 = 899.49 : x
  2. Step 2: Convert to fraction form
    3,208.53/4,811.72 = 899.49/x
  3. Step 3: Cross multiply
    3,208.53x = 4,811.72 × 899.49
  4. Step 4: Simplify right side
    3,208.53x = 4,328,089.53
  5. Step 5: Solve for x
    x = 4,328,089.53/3,208.53
  6. Step 6: Final answer
    x = 1,348.93

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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.