Home / 3,216.32-4,438.63-1,890

Finding the Fourth Proportional to 3,216.32, 4,438.63 and 1,890

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Solution

The fourth proportional to 3,216.32, 4,438.63 and 1,890 is: 2,608.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.32 : 4,438.63 = 1,890 : x
  2. Step 2: Convert to fraction form
    3,216.32/4,438.63 = 1,890/x
  3. Step 3: Cross multiply
    3,216.32x = 4,438.63 × 1,890
  4. Step 4: Simplify right side
    3,216.32x = 8,389,010.70
  5. Step 5: Solve for x
    x = 8,389,010.70/3,216.32
  6. Step 6: Final answer
    x = 2,608.26

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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.