Home / 3,111.78-4,667.70-922.02

Finding the Fourth Proportional to 3,111.78, 4,667.70 and 922.02

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Solution

The fourth proportional to 3,111.78, 4,667.70 and 922.02 is: 1,383.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.78 : 4,667.70 = 922.02 : x
  2. Step 2: Convert to fraction form
    3,111.78/4,667.70 = 922.02/x
  3. Step 3: Cross multiply
    3,111.78x = 4,667.70 × 922.02
  4. Step 4: Simplify right side
    3,111.78x = 4,303,712.75
  5. Step 5: Solve for x
    x = 4,303,712.75/3,111.78
  6. Step 6: Final answer
    x = 1,383.04

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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.