Home / 7,871.36-11,817.07-6,767.84

Finding the Fourth Proportional to 7,871.36, 11,817.07 and 6,767.84

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Solution

The fourth proportional to 7,871.36, 11,817.07 and 6,767.84 is: 10,160.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.36 : 11,817.07 = 6,767.84 : x
  2. Step 2: Convert to fraction form
    7,871.36/11,817.07 = 6,767.84/x
  3. Step 3: Cross multiply
    7,871.36x = 11,817.07 × 6,767.84
  4. Step 4: Simplify right side
    7,871.36x = 79,976,051.65
  5. Step 5: Solve for x
    x = 79,976,051.65/7,871.36
  6. Step 6: Final answer
    x = 10,160.38

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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.