Home / 2,130.63-3,198.38-1,266.77

Finding the Fourth Proportional to 2,130.63, 3,198.38 and 1,266.77

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Solution

The fourth proportional to 2,130.63, 3,198.38 and 1,266.77 is: 1,901.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.63 : 3,198.38 = 1,266.77 : x
  2. Step 2: Convert to fraction form
    2,130.63/3,198.38 = 1,266.77/x
  3. Step 3: Cross multiply
    2,130.63x = 3,198.38 × 1,266.77
  4. Step 4: Simplify right side
    2,130.63x = 4,051,589.51
  5. Step 5: Solve for x
    x = 4,051,589.51/2,130.63
  6. Step 6: Final answer
    x = 1,901.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.