Home / 2,130.27-2,939.79-1,198.77

Finding the Fourth Proportional to 2,130.27, 2,939.79 and 1,198.77

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Solution

The fourth proportional to 2,130.27, 2,939.79 and 1,198.77 is: 1,654.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.27 : 2,939.79 = 1,198.77 : x
  2. Step 2: Convert to fraction form
    2,130.27/2,939.79 = 1,198.77/x
  3. Step 3: Cross multiply
    2,130.27x = 2,939.79 × 1,198.77
  4. Step 4: Simplify right side
    2,130.27x = 3,524,132.06
  5. Step 5: Solve for x
    x = 3,524,132.06/2,130.27
  6. Step 6: Final answer
    x = 1,654.31

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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.