Home / 2,129.56-2,938.84-1,198.08

Finding the Fourth Proportional to 2,129.56, 2,938.84 and 1,198.08

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Solution

The fourth proportional to 2,129.56, 2,938.84 and 1,198.08 is: 1,653.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.56 : 2,938.84 = 1,198.08 : x
  2. Step 2: Convert to fraction form
    2,129.56/2,938.84 = 1,198.08/x
  3. Step 3: Cross multiply
    2,129.56x = 2,938.84 × 1,198.08
  4. Step 4: Simplify right side
    2,129.56x = 3,520,965.43
  5. Step 5: Solve for x
    x = 3,520,965.43/2,129.56
  6. Step 6: Final answer
    x = 1,653.38

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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.