Home / 3,904.78-5,865.33-3,319.69

Finding the Fourth Proportional to 3,904.78, 5,865.33 and 3,319.69

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Solution

The fourth proportional to 3,904.78, 5,865.33 and 3,319.69 is: 4,986.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.78 : 5,865.33 = 3,319.69 : x
  2. Step 2: Convert to fraction form
    3,904.78/5,865.33 = 3,319.69/x
  3. Step 3: Cross multiply
    3,904.78x = 5,865.33 × 3,319.69
  4. Step 4: Simplify right side
    3,904.78x = 19,471,077.35
  5. Step 5: Solve for x
    x = 19,471,077.35/3,904.78
  6. Step 6: Final answer
    x = 4,986.47

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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.