Home / 2,688.75-3,709.08-1,804.86

Finding the Fourth Proportional to 2,688.75, 3,709.08 and 1,804.86

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Solution

The fourth proportional to 2,688.75, 3,709.08 and 1,804.86 is: 2,489.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.75 : 3,709.08 = 1,804.86 : x
  2. Step 2: Convert to fraction form
    2,688.75/3,709.08 = 1,804.86/x
  3. Step 3: Cross multiply
    2,688.75x = 3,709.08 × 1,804.86
  4. Step 4: Simplify right side
    2,688.75x = 6,694,370.13
  5. Step 5: Solve for x
    x = 6,694,370.13/2,688.75
  6. Step 6: Final answer
    x = 2,489.77

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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.