Home / 2,478.45-3,720.11-1,887.96

Finding the Fourth Proportional to 2,478.45, 3,720.11 and 1,887.96

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Solution

The fourth proportional to 2,478.45, 3,720.11 and 1,887.96 is: 2,833.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.45 : 3,720.11 = 1,887.96 : x
  2. Step 2: Convert to fraction form
    2,478.45/3,720.11 = 1,887.96/x
  3. Step 3: Cross multiply
    2,478.45x = 3,720.11 × 1,887.96
  4. Step 4: Simplify right side
    2,478.45x = 7,023,409.44
  5. Step 5: Solve for x
    x = 7,023,409.44/2,478.45
  6. Step 6: Final answer
    x = 2,833.79

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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.