Home / 1,908.21-2,867.10-1,215.19

Finding the Fourth Proportional to 1,908.21, 2,867.10 and 1,215.19

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Solution

The fourth proportional to 1,908.21, 2,867.10 and 1,215.19 is: 1,825.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.21 : 2,867.10 = 1,215.19 : x
  2. Step 2: Convert to fraction form
    1,908.21/2,867.10 = 1,215.19/x
  3. Step 3: Cross multiply
    1,908.21x = 2,867.10 × 1,215.19
  4. Step 4: Simplify right side
    1,908.21x = 3,484,056.91
  5. Step 5: Solve for x
    x = 3,484,056.91/1,908.21
  6. Step 6: Final answer
    x = 1,825.83

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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.