Home / 2,305.20-3,178.36-1,803.44

Finding the Fourth Proportional to 2,305.20, 3,178.36 and 1,803.44

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Solution

The fourth proportional to 2,305.20, 3,178.36 and 1,803.44 is: 2,486.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.20 : 3,178.36 = 1,803.44 : x
  2. Step 2: Convert to fraction form
    2,305.20/3,178.36 = 1,803.44/x
  3. Step 3: Cross multiply
    2,305.20x = 3,178.36 × 1,803.44
  4. Step 4: Simplify right side
    2,305.20x = 5,731,981.56
  5. Step 5: Solve for x
    x = 5,731,981.56/2,305.20
  6. Step 6: Final answer
    x = 2,486.54

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1.5x scale

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.