Home / 3,216.25-4,438.48-1,819

Finding the Fourth Proportional to 3,216.25, 4,438.48 and 1,819

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Solution

The fourth proportional to 3,216.25, 4,438.48 and 1,819 is: 2,510.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.25 : 4,438.48 = 1,819 : x
  2. Step 2: Convert to fraction form
    3,216.25/4,438.48 = 1,819/x
  3. Step 3: Cross multiply
    3,216.25x = 4,438.48 × 1,819
  4. Step 4: Simplify right side
    3,216.25x = 8,073,595.12
  5. Step 5: Solve for x
    x = 8,073,595.12/3,216.25
  6. Step 6: Final answer
    x = 2,510.25

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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.