Home / 8,125.21-12,187.83-2,931.08

Finding the Fourth Proportional to 8,125.21, 12,187.83 and 2,931.08

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Solution

The fourth proportional to 8,125.21, 12,187.83 and 2,931.08 is: 4,396.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.21 : 12,187.83 = 2,931.08 : x
  2. Step 2: Convert to fraction form
    8,125.21/12,187.83 = 2,931.08/x
  3. Step 3: Cross multiply
    8,125.21x = 12,187.83 × 2,931.08
  4. Step 4: Simplify right side
    8,125.21x = 35,723,504.76
  5. Step 5: Solve for x
    x = 35,723,504.76/8,125.21
  6. Step 6: Final answer
    x = 4,396.63

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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.