Home / 9,865.90-14,805.93-3,939.36

Finding the Fourth Proportional to 9,865.90, 14,805.93 and 3,939.36

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Solution

The fourth proportional to 9,865.90, 14,805.93 and 3,939.36 is: 5,911.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,865.90 : 14,805.93 = 3,939.36 : x
  2. Step 2: Convert to fraction form
    9,865.90/14,805.93 = 3,939.36/x
  3. Step 3: Cross multiply
    9,865.90x = 14,805.93 × 3,939.36
  4. Step 4: Simplify right side
    9,865.90x = 58,325,847.66
  5. Step 5: Solve for x
    x = 58,325,847.66/9,865.90
  6. Step 6: Final answer
    x = 5,911.86

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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.