Home / 8,126.93-11,220.37-6,638.42

Finding the Fourth Proportional to 8,126.93, 11,220.37 and 6,638.42

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Solution

The fourth proportional to 8,126.93, 11,220.37 and 6,638.42 is: 9,165.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.93 : 11,220.37 = 6,638.42 : x
  2. Step 2: Convert to fraction form
    8,126.93/11,220.37 = 6,638.42/x
  3. Step 3: Cross multiply
    8,126.93x = 11,220.37 × 6,638.42
  4. Step 4: Simplify right side
    8,126.93x = 74,485,528.62
  5. Step 5: Solve for x
    x = 74,485,528.62/8,126.93
  6. Step 6: Final answer
    x = 9,165.27

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Half scale
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Double scale
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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.