Home / 2,803.21-3,866.45-2,380.65

Finding the Fourth Proportional to 2,803.21, 3,866.45 and 2,380.65

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Solution

The fourth proportional to 2,803.21, 3,866.45 and 2,380.65 is: 3,283.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.21 : 3,866.45 = 2,380.65 : x
  2. Step 2: Convert to fraction form
    2,803.21/3,866.45 = 2,380.65/x
  3. Step 3: Cross multiply
    2,803.21x = 3,866.45 × 2,380.65
  4. Step 4: Simplify right side
    2,803.21x = 9,204,664.19
  5. Step 5: Solve for x
    x = 9,204,664.19/2,803.21
  6. Step 6: Final answer
    x = 3,283.62

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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.