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Finding the Fourth Proportional to 3,933.12, 5,899.68 and 1,336

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Solution

The fourth proportional to 3,933.12, 5,899.68 and 1,336 is: 2,004.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.12 : 5,899.68 = 1,336 : x
  2. Step 2: Convert to fraction form
    3,933.12/5,899.68 = 1,336/x
  3. Step 3: Cross multiply
    3,933.12x = 5,899.68 × 1,336
  4. Step 4: Simplify right side
    3,933.12x = 7,881,972.48
  5. Step 5: Solve for x
    x = 7,881,972.48/3,933.12
  6. Step 6: Final answer
    x = 2,004.00

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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.