Home / 6,112.99-8,440.77-3,989.98

Finding the Fourth Proportional to 6,112.99, 8,440.77 and 3,989.98

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Solution

The fourth proportional to 6,112.99, 8,440.77 and 3,989.98 is: 5,509.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,112.99 : 8,440.77 = 3,989.98 : x
  2. Step 2: Convert to fraction form
    6,112.99/8,440.77 = 3,989.98/x
  3. Step 3: Cross multiply
    6,112.99x = 8,440.77 × 3,989.98
  4. Step 4: Simplify right side
    6,112.99x = 33,678,503.48
  5. Step 5: Solve for x
    x = 33,678,503.48/6,112.99
  6. Step 6: Final answer
    x = 5,509.33

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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.