Home / 8,104.09-12,158.11-3,421.58

Finding the Fourth Proportional to 8,104.09, 12,158.11 and 3,421.58

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Solution

The fourth proportional to 8,104.09, 12,158.11 and 3,421.58 is: 5,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,104.09 : 12,158.11 = 3,421.58 : x
  2. Step 2: Convert to fraction form
    8,104.09/12,158.11 = 3,421.58/x
  3. Step 3: Cross multiply
    8,104.09x = 12,158.11 × 3,421.58
  4. Step 4: Simplify right side
    8,104.09x = 41,599,946.01
  5. Step 5: Solve for x
    x = 41,599,946.01/8,104.09
  6. Step 6: Final answer
    x = 5,133.20

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1.5x scale

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.