Home / 7,382.59-11,072.85-2,118.05

Finding the Fourth Proportional to 7,382.59, 11,072.85 and 2,118.05

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Solution

The fourth proportional to 7,382.59, 11,072.85 and 2,118.05 is: 3,176.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,382.59 : 11,072.85 = 2,118.05 : x
  2. Step 2: Convert to fraction form
    7,382.59/11,072.85 = 2,118.05/x
  3. Step 3: Cross multiply
    7,382.59x = 11,072.85 × 2,118.05
  4. Step 4: Simplify right side
    7,382.59x = 23,452,828.16
  5. Step 5: Solve for x
    x = 23,452,828.16/7,382.59
  6. Step 6: Final answer
    x = 3,176.78

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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.