Home / 7,811.10-11,718-2,884.41

Finding the Fourth Proportional to 7,811.10, 11,718 and 2,884.41

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Solution

The fourth proportional to 7,811.10, 11,718 and 2,884.41 is: 4,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.10 : 11,718 = 2,884.41 : x
  2. Step 2: Convert to fraction form
    7,811.10/11,718 = 2,884.41/x
  3. Step 3: Cross multiply
    7,811.10x = 11,718 × 2,884.41
  4. Step 4: Simplify right side
    7,811.10x = 33,799,516.38
  5. Step 5: Solve for x
    x = 33,799,516.38/7,811.10
  6. Step 6: Final answer
    x = 4,327.11

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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.