Home / 9,116.36-12,561.83-6,991.80

Finding the Fourth Proportional to 9,116.36, 12,561.83 and 6,991.80

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Solution

The fourth proportional to 9,116.36, 12,561.83 and 6,991.80 is: 9,634.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,116.36 : 12,561.83 = 6,991.80 : x
  2. Step 2: Convert to fraction form
    9,116.36/12,561.83 = 6,991.80/x
  3. Step 3: Cross multiply
    9,116.36x = 12,561.83 × 6,991.80
  4. Step 4: Simplify right side
    9,116.36x = 87,829,768.04
  5. Step 5: Solve for x
    x = 87,829,768.04/9,116.36
  6. Step 6: Final answer
    x = 9,634.31

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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.