Home / 2,129.93-3,190.88-1,090.59

Finding the Fourth Proportional to 2,129.93, 3,190.88 and 1,090.59

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Solution

The fourth proportional to 2,129.93, 3,190.88 and 1,090.59 is: 1,633.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.93 : 3,190.88 = 1,090.59 : x
  2. Step 2: Convert to fraction form
    2,129.93/3,190.88 = 1,090.59/x
  3. Step 3: Cross multiply
    2,129.93x = 3,190.88 × 1,090.59
  4. Step 4: Simplify right side
    2,129.93x = 3,479,953.79
  5. Step 5: Solve for x
    x = 3,479,953.79/2,129.93
  6. Step 6: Final answer
    x = 1,633.83

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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.