Home / 2,315.82-3,471.30-1,438.32

Finding the Fourth Proportional to 2,315.82, 3,471.30 and 1,438.32

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Solution

The fourth proportional to 2,315.82, 3,471.30 and 1,438.32 is: 2,155.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.82 : 3,471.30 = 1,438.32 : x
  2. Step 2: Convert to fraction form
    2,315.82/3,471.30 = 1,438.32/x
  3. Step 3: Cross multiply
    2,315.82x = 3,471.30 × 1,438.32
  4. Step 4: Simplify right side
    2,315.82x = 4,992,840.22
  5. Step 5: Solve for x
    x = 4,992,840.22/2,315.82
  6. Step 6: Final answer
    x = 2,155.97

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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.