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Finding the Fourth Proportional to 3,443.05, 5,164.60 and 845.99

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Solution

The fourth proportional to 3,443.05, 5,164.60 and 845.99 is: 1,268.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,443.05 : 5,164.60 = 845.99 : x
  2. Step 2: Convert to fraction form
    3,443.05/5,164.60 = 845.99/x
  3. Step 3: Cross multiply
    3,443.05x = 5,164.60 × 845.99
  4. Step 4: Simplify right side
    3,443.05x = 4,369,199.95
  5. Step 5: Solve for x
    x = 4,369,199.95/3,443.05
  6. Step 6: Final answer
    x = 1,268.99

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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.