Home / 2,130.10-2,939.43-1,198.66

Finding the Fourth Proportional to 2,130.10, 2,939.43 and 1,198.66

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Solution

The fourth proportional to 2,130.10, 2,939.43 and 1,198.66 is: 1,654.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.10 : 2,939.43 = 1,198.66 : x
  2. Step 2: Convert to fraction form
    2,130.10/2,939.43 = 1,198.66/x
  3. Step 3: Cross multiply
    2,130.10x = 2,939.43 × 1,198.66
  4. Step 4: Simplify right side
    2,130.10x = 3,523,377.16
  5. Step 5: Solve for x
    x = 3,523,377.16/2,130.10
  6. Step 6: Final answer
    x = 1,654.09

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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.