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Finding the Fourth Proportional to 3,557.88, 5,336.81 and 960.81

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Solution

The fourth proportional to 3,557.88, 5,336.81 and 960.81 is: 1,441.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.88 : 5,336.81 = 960.81 : x
  2. Step 2: Convert to fraction form
    3,557.88/5,336.81 = 960.81/x
  3. Step 3: Cross multiply
    3,557.88x = 5,336.81 × 960.81
  4. Step 4: Simplify right side
    3,557.88x = 5,127,660.42
  5. Step 5: Solve for x
    x = 5,127,660.42/3,557.88
  6. Step 6: Final answer
    x = 1,441.21

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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.