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Finding the Fourth Proportional to 1,965.63, 2,951.70 and 1,200.99

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Solution

The fourth proportional to 1,965.63, 2,951.70 and 1,200.99 is: 1,803.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.63 : 2,951.70 = 1,200.99 : x
  2. Step 2: Convert to fraction form
    1,965.63/2,951.70 = 1,200.99/x
  3. Step 3: Cross multiply
    1,965.63x = 2,951.70 × 1,200.99
  4. Step 4: Simplify right side
    1,965.63x = 3,544,962.18
  5. Step 5: Solve for x
    x = 3,544,962.18/1,965.63
  6. Step 6: Final answer
    x = 1,803.47

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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.