Home / 5,811.10-8,716.53-1,428.39

Finding the Fourth Proportional to 5,811.10, 8,716.53 and 1,428.39

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Solution

The fourth proportional to 5,811.10, 8,716.53 and 1,428.39 is: 2,142.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.10 : 8,716.53 = 1,428.39 : x
  2. Step 2: Convert to fraction form
    5,811.10/8,716.53 = 1,428.39/x
  3. Step 3: Cross multiply
    5,811.10x = 8,716.53 × 1,428.39
  4. Step 4: Simplify right side
    5,811.10x = 12,450,604.29
  5. Step 5: Solve for x
    x = 12,450,604.29/5,811.10
  6. Step 6: Final answer
    x = 2,142.56

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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.