Home / 8,107.85-12,157.63-3,721.50

Finding the Fourth Proportional to 8,107.85, 12,157.63 and 3,721.50

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Solution

The fourth proportional to 8,107.85, 12,157.63 and 3,721.50 is: 5,580.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.85 : 12,157.63 = 3,721.50 : x
  2. Step 2: Convert to fraction form
    8,107.85/12,157.63 = 3,721.50/x
  3. Step 3: Cross multiply
    8,107.85x = 12,157.63 × 3,721.50
  4. Step 4: Simplify right side
    8,107.85x = 45,244,610.74
  5. Step 5: Solve for x
    x = 45,244,610.74/8,107.85
  6. Step 6: Final answer
    x = 5,580.34

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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.