Home / 2,253.45-3,378.73-938.12

Finding the Fourth Proportional to 2,253.45, 3,378.73 and 938.12

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Solution

The fourth proportional to 2,253.45, 3,378.73 and 938.12 is: 1,406.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.45 : 3,378.73 = 938.12 : x
  2. Step 2: Convert to fraction form
    2,253.45/3,378.73 = 938.12/x
  3. Step 3: Cross multiply
    2,253.45x = 3,378.73 × 938.12
  4. Step 4: Simplify right side
    2,253.45x = 3,169,654.19
  5. Step 5: Solve for x
    x = 3,169,654.19/2,253.45
  6. Step 6: Final answer
    x = 1,406.58

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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.