Home / 8,165.36-11,271.48-6,912.92

Finding the Fourth Proportional to 8,165.36, 11,271.48 and 6,912.92

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Solution

The fourth proportional to 8,165.36, 11,271.48 and 6,912.92 is: 9,542.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165.36 : 11,271.48 = 6,912.92 : x
  2. Step 2: Convert to fraction form
    8,165.36/11,271.48 = 6,912.92/x
  3. Step 3: Cross multiply
    8,165.36x = 11,271.48 × 6,912.92
  4. Step 4: Simplify right side
    8,165.36x = 77,918,839.52
  5. Step 5: Solve for x
    x = 77,918,839.52/8,165.36
  6. Step 6: Final answer
    x = 9,542.61

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Half scale
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Double scale
Find fourth proportional to 8,166.36, 11,272.86 and 6,913.92
Similar ratio
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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.