Home / 7,111.05-10,668.13-2,181.07

Finding the Fourth Proportional to 7,111.05, 10,668.13 and 2,181.07

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Solution

The fourth proportional to 7,111.05, 10,668.13 and 2,181.07 is: 3,272.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.05 : 10,668.13 = 2,181.07 : x
  2. Step 2: Convert to fraction form
    7,111.05/10,668.13 = 2,181.07/x
  3. Step 3: Cross multiply
    7,111.05x = 10,668.13 × 2,181.07
  4. Step 4: Simplify right side
    7,111.05x = 23,267,938.30
  5. Step 5: Solve for x
    x = 23,267,938.30/7,111.05
  6. Step 6: Final answer
    x = 3,272.08

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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.