Home / 3,857.18-5,784.58-1,391.68

Finding the Fourth Proportional to 3,857.18, 5,784.58 and 1,391.68

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Solution

The fourth proportional to 3,857.18, 5,784.58 and 1,391.68 is: 2,087.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.18 : 5,784.58 = 1,391.68 : x
  2. Step 2: Convert to fraction form
    3,857.18/5,784.58 = 1,391.68/x
  3. Step 3: Cross multiply
    3,857.18x = 5,784.58 × 1,391.68
  4. Step 4: Simplify right side
    3,857.18x = 8,050,280.82
  5. Step 5: Solve for x
    x = 8,050,280.82/3,857.18
  6. Step 6: Final answer
    x = 2,087.09

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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.