Home / 3,784.39-5,677.34-1,318.55

Finding the Fourth Proportional to 3,784.39, 5,677.34 and 1,318.55

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Solution

The fourth proportional to 3,784.39, 5,677.34 and 1,318.55 is: 1,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,784.39 : 5,677.34 = 1,318.55 : x
  2. Step 2: Convert to fraction form
    3,784.39/5,677.34 = 1,318.55/x
  3. Step 3: Cross multiply
    3,784.39x = 5,677.34 × 1,318.55
  4. Step 4: Simplify right side
    3,784.39x = 7,485,844.68
  5. Step 5: Solve for x
    x = 7,485,844.68/3,784.39
  6. Step 6: Final answer
    x = 1,978.09

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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.