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Finding the Fourth Proportional to 3,968.66, 5,953.65 and 1,336.40

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Solution

The fourth proportional to 3,968.66, 5,953.65 and 1,336.40 is: 2,004.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.66 : 5,953.65 = 1,336.40 : x
  2. Step 2: Convert to fraction form
    3,968.66/5,953.65 = 1,336.40/x
  3. Step 3: Cross multiply
    3,968.66x = 5,953.65 × 1,336.40
  4. Step 4: Simplify right side
    3,968.66x = 7,956,451.18
  5. Step 5: Solve for x
    x = 7,956,451.18/3,968.66
  6. Step 6: Final answer
    x = 2,004.82

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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.