Home / 2,125.80-3,189.48-1,029.60

Finding the Fourth Proportional to 2,125.80, 3,189.48 and 1,029.60

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Solution

The fourth proportional to 2,125.80, 3,189.48 and 1,029.60 is: 1,544.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.80 : 3,189.48 = 1,029.60 : x
  2. Step 2: Convert to fraction form
    2,125.80/3,189.48 = 1,029.60/x
  3. Step 3: Cross multiply
    2,125.80x = 3,189.48 × 1,029.60
  4. Step 4: Simplify right side
    2,125.80x = 3,283,888.61
  5. Step 5: Solve for x
    x = 3,283,888.61/2,125.80
  6. Step 6: Final answer
    x = 1,544.78

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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.