Home / 3,066.36-4,231.92-2,878.68

Finding the Fourth Proportional to 3,066.36, 4,231.92 and 2,878.68

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Solution

The fourth proportional to 3,066.36, 4,231.92 and 2,878.68 is: 3,972.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,066.36 : 4,231.92 = 2,878.68 : x
  2. Step 2: Convert to fraction form
    3,066.36/4,231.92 = 2,878.68/x
  3. Step 3: Cross multiply
    3,066.36x = 4,231.92 × 2,878.68
  4. Step 4: Simplify right side
    3,066.36x = 12,182,343.47
  5. Step 5: Solve for x
    x = 12,182,343.47/3,066.36
  6. Step 6: Final answer
    x = 3,972.90

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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.