Home / 8,106.87-11,180.70-5,272.89

Finding the Fourth Proportional to 8,106.87, 11,180.70 and 5,272.89

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Solution

The fourth proportional to 8,106.87, 11,180.70 and 5,272.89 is: 7,272.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,106.87 : 11,180.70 = 5,272.89 : x
  2. Step 2: Convert to fraction form
    8,106.87/11,180.70 = 5,272.89/x
  3. Step 3: Cross multiply
    8,106.87x = 11,180.70 × 5,272.89
  4. Step 4: Simplify right side
    8,106.87x = 58,954,601.22
  5. Step 5: Solve for x
    x = 58,954,601.22/8,106.87
  6. Step 6: Final answer
    x = 7,272.18

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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.