Home / 2,130.13-2,939.60-1,198.63

Finding the Fourth Proportional to 2,130.13, 2,939.60 and 1,198.63

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Solution

The fourth proportional to 2,130.13, 2,939.60 and 1,198.63 is: 1,654.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.13 : 2,939.60 = 1,198.63 : x
  2. Step 2: Convert to fraction form
    2,130.13/2,939.60 = 1,198.63/x
  3. Step 3: Cross multiply
    2,130.13x = 2,939.60 × 1,198.63
  4. Step 4: Simplify right side
    2,130.13x = 3,523,472.06
  5. Step 5: Solve for x
    x = 3,523,472.06/2,130.13
  6. Step 6: Final answer
    x = 1,654.12

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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.