Home / 8,112.85-11,193.12-6,405.94

Finding the Fourth Proportional to 8,112.85, 11,193.12 and 6,405.94

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Solution

The fourth proportional to 8,112.85, 11,193.12 and 6,405.94 is: 8,838.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.85 : 11,193.12 = 6,405.94 : x
  2. Step 2: Convert to fraction form
    8,112.85/11,193.12 = 6,405.94/x
  3. Step 3: Cross multiply
    8,112.85x = 11,193.12 × 6,405.94
  4. Step 4: Simplify right side
    8,112.85x = 71,702,455.13
  5. Step 5: Solve for x
    x = 71,702,455.13/8,112.85
  6. Step 6: Final answer
    x = 8,838.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.