Home / 3,187.95-4,782.15-1,337.21

Finding the Fourth Proportional to 3,187.95, 4,782.15 and 1,337.21

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Solution

The fourth proportional to 3,187.95, 4,782.15 and 1,337.21 is: 2,005.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.95 : 4,782.15 = 1,337.21 : x
  2. Step 2: Convert to fraction form
    3,187.95/4,782.15 = 1,337.21/x
  3. Step 3: Cross multiply
    3,187.95x = 4,782.15 × 1,337.21
  4. Step 4: Simplify right side
    3,187.95x = 6,394,738.80
  5. Step 5: Solve for x
    x = 6,394,738.80/3,187.95
  6. Step 6: Final answer
    x = 2,005.91

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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.