Home / 2,122.67-3,181.53-1,147.07

Finding the Fourth Proportional to 2,122.67, 3,181.53 and 1,147.07

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Solution

The fourth proportional to 2,122.67, 3,181.53 and 1,147.07 is: 1,719.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.67 : 3,181.53 = 1,147.07 : x
  2. Step 2: Convert to fraction form
    2,122.67/3,181.53 = 1,147.07/x
  3. Step 3: Cross multiply
    2,122.67x = 3,181.53 × 1,147.07
  4. Step 4: Simplify right side
    2,122.67x = 3,649,437.62
  5. Step 5: Solve for x
    x = 3,649,437.62/2,122.67
  6. Step 6: Final answer
    x = 1,719.27

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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.