Home / 8,111.08-12,166.58-1,955.08

Finding the Fourth Proportional to 8,111.08, 12,166.58 and 1,955.08

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Solution

The fourth proportional to 8,111.08, 12,166.58 and 1,955.08 is: 2,932.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.08 : 12,166.58 = 1,955.08 : x
  2. Step 2: Convert to fraction form
    8,111.08/12,166.58 = 1,955.08/x
  3. Step 3: Cross multiply
    8,111.08x = 12,166.58 × 1,955.08
  4. Step 4: Simplify right side
    8,111.08x = 23,786,637.23
  5. Step 5: Solve for x
    x = 23,786,637.23/8,111.08
  6. Step 6: Final answer
    x = 2,932.61

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.