Home / 7,872.36-11,818.57-6,768.84

Finding the Fourth Proportional to 7,872.36, 11,818.57 and 6,768.84

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Solution

The fourth proportional to 7,872.36, 11,818.57 and 6,768.84 is: 10,161.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.36 : 11,818.57 = 6,768.84 : x
  2. Step 2: Convert to fraction form
    7,872.36/11,818.57 = 6,768.84/x
  3. Step 3: Cross multiply
    7,872.36x = 11,818.57 × 6,768.84
  4. Step 4: Simplify right side
    7,872.36x = 79,998,009.36
  5. Step 5: Solve for x
    x = 79,998,009.36/7,872.36
  6. Step 6: Final answer
    x = 10,161.88

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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.