Home / 3,111.36-4,662.36-1,938.12

Finding the Fourth Proportional to 3,111.36, 4,662.36 and 1,938.12

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Solution

The fourth proportional to 3,111.36, 4,662.36 and 1,938.12 is: 2,904.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.36 : 4,662.36 = 1,938.12 : x
  2. Step 2: Convert to fraction form
    3,111.36/4,662.36 = 1,938.12/x
  3. Step 3: Cross multiply
    3,111.36x = 4,662.36 × 1,938.12
  4. Step 4: Simplify right side
    3,111.36x = 9,036,213.16
  5. Step 5: Solve for x
    x = 9,036,213.16/3,111.36
  6. Step 6: Final answer
    x = 2,904.26

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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.