Home / 3,216.15-4,438.10-1,889.79

Finding the Fourth Proportional to 3,216.15, 4,438.10 and 1,889.79

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Solution

The fourth proportional to 3,216.15, 4,438.10 and 1,889.79 is: 2,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.15 : 4,438.10 = 1,889.79 : x
  2. Step 2: Convert to fraction form
    3,216.15/4,438.10 = 1,889.79/x
  3. Step 3: Cross multiply
    3,216.15x = 4,438.10 × 1,889.79
  4. Step 4: Simplify right side
    3,216.15x = 8,387,067.55
  5. Step 5: Solve for x
    x = 8,387,067.55/3,216.15
  6. Step 6: Final answer
    x = 2,607.80

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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.