Home / 2,938.38-4,054.68-1,679.46

Finding the Fourth Proportional to 2,938.38, 4,054.68 and 1,679.46

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Solution

The fourth proportional to 2,938.38, 4,054.68 and 1,679.46 is: 2,317.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.38 : 4,054.68 = 1,679.46 : x
  2. Step 2: Convert to fraction form
    2,938.38/4,054.68 = 1,679.46/x
  3. Step 3: Cross multiply
    2,938.38x = 4,054.68 × 1,679.46
  4. Step 4: Simplify right side
    2,938.38x = 6,809,672.87
  5. Step 5: Solve for x
    x = 6,809,672.87/2,938.38
  6. Step 6: Final answer
    x = 2,317.49

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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.