Home / 2,803.60-3,867.67-1,809.20

Finding the Fourth Proportional to 2,803.60, 3,867.67 and 1,809.20

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Solution

The fourth proportional to 2,803.60, 3,867.67 and 1,809.20 is: 2,495.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.60 : 3,867.67 = 1,809.20 : x
  2. Step 2: Convert to fraction form
    2,803.60/3,867.67 = 1,809.20/x
  3. Step 3: Cross multiply
    2,803.60x = 3,867.67 × 1,809.20
  4. Step 4: Simplify right side
    2,803.60x = 6,997,388.56
  5. Step 5: Solve for x
    x = 6,997,388.56/2,803.60
  6. Step 6: Final answer
    x = 2,495.86

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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.