Home / 8,111.10-12,149.64-4,203.66

Finding the Fourth Proportional to 8,111.10, 12,149.64 and 4,203.66

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Solution

The fourth proportional to 8,111.10, 12,149.64 and 4,203.66 is: 6,296.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.10 : 12,149.64 = 4,203.66 : x
  2. Step 2: Convert to fraction form
    8,111.10/12,149.64 = 4,203.66/x
  3. Step 3: Cross multiply
    8,111.10x = 12,149.64 × 4,203.66
  4. Step 4: Simplify right side
    8,111.10x = 51,072,955.68
  5. Step 5: Solve for x
    x = 51,072,955.68/8,111.10
  6. Step 6: Final answer
    x = 6,296.67

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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.