Home / 6,809.65-10,211.67-2,128.06

Finding the Fourth Proportional to 6,809.65, 10,211.67 and 2,128.06

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Solution

The fourth proportional to 6,809.65, 10,211.67 and 2,128.06 is: 3,191.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,809.65 : 10,211.67 = 2,128.06 : x
  2. Step 2: Convert to fraction form
    6,809.65/10,211.67 = 2,128.06/x
  3. Step 3: Cross multiply
    6,809.65x = 10,211.67 × 2,128.06
  4. Step 4: Simplify right side
    6,809.65x = 21,731,046.46
  5. Step 5: Solve for x
    x = 21,731,046.46/6,809.65
  6. Step 6: Final answer
    x = 3,191.21

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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.