Home / 1,876.12-2,589.30-1,409.56

Finding the Fourth Proportional to 1,876.12, 2,589.30 and 1,409.56

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Solution

The fourth proportional to 1,876.12, 2,589.30 and 1,409.56 is: 1,945.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,876.12 : 2,589.30 = 1,409.56 : x
  2. Step 2: Convert to fraction form
    1,876.12/2,589.30 = 1,409.56/x
  3. Step 3: Cross multiply
    1,876.12x = 2,589.30 × 1,409.56
  4. Step 4: Simplify right side
    1,876.12x = 3,649,773.71
  5. Step 5: Solve for x
    x = 3,649,773.71/1,876.12
  6. Step 6: Final answer
    x = 1,945.38

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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.