Home / 6,811.65-10,220.72-3,890.79

Finding the Fourth Proportional to 6,811.65, 10,220.72 and 3,890.79

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Solution

The fourth proportional to 6,811.65, 10,220.72 and 3,890.79 is: 5,838.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,811.65 : 10,220.72 = 3,890.79 : x
  2. Step 2: Convert to fraction form
    6,811.65/10,220.72 = 3,890.79/x
  3. Step 3: Cross multiply
    6,811.65x = 10,220.72 × 3,890.79
  4. Step 4: Simplify right side
    6,811.65x = 39,766,655.71
  5. Step 5: Solve for x
    x = 39,766,655.71/6,811.65
  6. Step 6: Final answer
    x = 5,838.04

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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.