Home / 9,986.90-13,786.36-6,451.86

Finding the Fourth Proportional to 9,986.90, 13,786.36 and 6,451.86

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Solution

The fourth proportional to 9,986.90, 13,786.36 and 6,451.86 is: 8,906.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.90 : 13,786.36 = 6,451.86 : x
  2. Step 2: Convert to fraction form
    9,986.90/13,786.36 = 6,451.86/x
  3. Step 3: Cross multiply
    9,986.90x = 13,786.36 × 6,451.86
  4. Step 4: Simplify right side
    9,986.90x = 88,947,664.63
  5. Step 5: Solve for x
    x = 88,947,664.63/9,986.90
  6. Step 6: Final answer
    x = 8,906.43

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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.