Home / 8,120.79-12,176.33-3,440.07

Finding the Fourth Proportional to 8,120.79, 12,176.33 and 3,440.07

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Solution

The fourth proportional to 8,120.79, 12,176.33 and 3,440.07 is: 5,158.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.79 : 12,176.33 = 3,440.07 : x
  2. Step 2: Convert to fraction form
    8,120.79/12,176.33 = 3,440.07/x
  3. Step 3: Cross multiply
    8,120.79x = 12,176.33 × 3,440.07
  4. Step 4: Simplify right side
    8,120.79x = 41,887,410.34
  5. Step 5: Solve for x
    x = 41,887,410.34/8,120.79
  6. Step 6: Final answer
    x = 5,158.05

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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.