Home / 2,586.83-3,879.02-1,125.38

Finding the Fourth Proportional to 2,586.83, 3,879.02 and 1,125.38

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Solution

The fourth proportional to 2,586.83, 3,879.02 and 1,125.38 is: 1,687.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.83 : 3,879.02 = 1,125.38 : x
  2. Step 2: Convert to fraction form
    2,586.83/3,879.02 = 1,125.38/x
  3. Step 3: Cross multiply
    2,586.83x = 3,879.02 × 1,125.38
  4. Step 4: Simplify right side
    2,586.83x = 4,365,346.51
  5. Step 5: Solve for x
    x = 4,365,346.51/2,586.83
  6. Step 6: Final answer
    x = 1,687.53

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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.