Home / 8,107.34-12,161.70-2,559.20

Finding the Fourth Proportional to 8,107.34, 12,161.70 and 2,559.20

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Solution

The fourth proportional to 8,107.34, 12,161.70 and 2,559.20 is: 3,839.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.34 : 12,161.70 = 2,559.20 : x
  2. Step 2: Convert to fraction form
    8,107.34/12,161.70 = 2,559.20/x
  3. Step 3: Cross multiply
    8,107.34x = 12,161.70 × 2,559.20
  4. Step 4: Simplify right side
    8,107.34x = 31,124,222.64
  5. Step 5: Solve for x
    x = 31,124,222.64/8,107.34
  6. Step 6: Final answer
    x = 3,839.02

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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.