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Finding the Fourth Proportional to 3,946.97, 5,917.77 and 1,970.09

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Solution

The fourth proportional to 3,946.97, 5,917.77 and 1,970.09 is: 2,953.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.97 : 5,917.77 = 1,970.09 : x
  2. Step 2: Convert to fraction form
    3,946.97/5,917.77 = 1,970.09/x
  3. Step 3: Cross multiply
    3,946.97x = 5,917.77 × 1,970.09
  4. Step 4: Simplify right side
    3,946.97x = 11,658,539.50
  5. Step 5: Solve for x
    x = 11,658,539.50/3,946.97
  6. Step 6: Final answer
    x = 2,953.79

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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.