Home / 3,112.24-4,662.40-1,938.56

Finding the Fourth Proportional to 3,112.24, 4,662.40 and 1,938.56

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Solution

The fourth proportional to 3,112.24, 4,662.40 and 1,938.56 is: 2,904.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.24 : 4,662.40 = 1,938.56 : x
  2. Step 2: Convert to fraction form
    3,112.24/4,662.40 = 1,938.56/x
  3. Step 3: Cross multiply
    3,112.24x = 4,662.40 × 1,938.56
  4. Step 4: Simplify right side
    3,112.24x = 9,038,342.14
  5. Step 5: Solve for x
    x = 9,038,342.14/3,112.24
  6. Step 6: Final answer
    x = 2,904.13

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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.