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Finding the Fourth Proportional to 1,709.75, 2,359.60 and 963.86

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Solution

The fourth proportional to 1,709.75, 2,359.60 and 963.86 is: 1,330.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.75 : 2,359.60 = 963.86 : x
  2. Step 2: Convert to fraction form
    1,709.75/2,359.60 = 963.86/x
  3. Step 3: Cross multiply
    1,709.75x = 2,359.60 × 963.86
  4. Step 4: Simplify right side
    1,709.75x = 2,274,321.69
  5. Step 5: Solve for x
    x = 2,274,321.69/1,709.75
  6. Step 6: Final answer
    x = 1,330.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.