Home / 2,066.05-2,851.09-1,121.80

Finding the Fourth Proportional to 2,066.05, 2,851.09 and 1,121.80

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Solution

The fourth proportional to 2,066.05, 2,851.09 and 1,121.80 is: 1,548.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,066.05 : 2,851.09 = 1,121.80 : x
  2. Step 2: Convert to fraction form
    2,066.05/2,851.09 = 1,121.80/x
  3. Step 3: Cross multiply
    2,066.05x = 2,851.09 × 1,121.80
  4. Step 4: Simplify right side
    2,066.05x = 3,198,352.76
  5. Step 5: Solve for x
    x = 3,198,352.76/2,066.05
  6. Step 6: Final answer
    x = 1,548.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.