Home / 7,112.18-10,666.38-2,181.44

Finding the Fourth Proportional to 7,112.18, 10,666.38 and 2,181.44

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Solution

The fourth proportional to 7,112.18, 10,666.38 and 2,181.44 is: 3,271.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.18 : 10,666.38 = 2,181.44 : x
  2. Step 2: Convert to fraction form
    7,112.18/10,666.38 = 2,181.44/x
  3. Step 3: Cross multiply
    7,112.18x = 10,666.38 × 2,181.44
  4. Step 4: Simplify right side
    7,112.18x = 23,268,067.99
  5. Step 5: Solve for x
    x = 23,268,067.99/7,112.18
  6. Step 6: Final answer
    x = 3,271.58

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1.5x scale

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.