Home / 5,811.85-8,715.47-2,112.07

Finding the Fourth Proportional to 5,811.85, 8,715.47 and 2,112.07

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Solution

The fourth proportional to 5,811.85, 8,715.47 and 2,112.07 is: 3,167.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.85 : 8,715.47 = 2,112.07 : x
  2. Step 2: Convert to fraction form
    5,811.85/8,715.47 = 2,112.07/x
  3. Step 3: Cross multiply
    5,811.85x = 8,715.47 × 2,112.07
  4. Step 4: Simplify right side
    5,811.85x = 18,407,682.72
  5. Step 5: Solve for x
    x = 18,407,682.72/5,811.85
  6. Step 6: Final answer
    x = 3,167.27

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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.