Home / 3,221.50-4,445.43-1,804.98

Finding the Fourth Proportional to 3,221.50, 4,445.43 and 1,804.98

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Solution

The fourth proportional to 3,221.50, 4,445.43 and 1,804.98 is: 2,490.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.50 : 4,445.43 = 1,804.98 : x
  2. Step 2: Convert to fraction form
    3,221.50/4,445.43 = 1,804.98/x
  3. Step 3: Cross multiply
    3,221.50x = 4,445.43 × 1,804.98
  4. Step 4: Simplify right side
    3,221.50x = 8,023,932.30
  5. Step 5: Solve for x
    x = 8,023,932.30/3,221.50
  6. Step 6: Final answer
    x = 2,490.75

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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.