Home / 3,112.20-4,294.68-2,066.16

Finding the Fourth Proportional to 3,112.20, 4,294.68 and 2,066.16

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Solution

The fourth proportional to 3,112.20, 4,294.68 and 2,066.16 is: 2,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.20 : 4,294.68 = 2,066.16 : x
  2. Step 2: Convert to fraction form
    3,112.20/4,294.68 = 2,066.16/x
  3. Step 3: Cross multiply
    3,112.20x = 4,294.68 × 2,066.16
  4. Step 4: Simplify right side
    3,112.20x = 8,873,496.03
  5. Step 5: Solve for x
    x = 8,873,496.03/3,112.20
  6. Step 6: Final answer
    x = 2,851.20

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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.