Home / 3,185.50-4,395.99-1,788.70

Finding the Fourth Proportional to 3,185.50, 4,395.99 and 1,788.70

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Solution

The fourth proportional to 3,185.50, 4,395.99 and 1,788.70 is: 2,468.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.50 : 4,395.99 = 1,788.70 : x
  2. Step 2: Convert to fraction form
    3,185.50/4,395.99 = 1,788.70/x
  3. Step 3: Cross multiply
    3,185.50x = 4,395.99 × 1,788.70
  4. Step 4: Simplify right side
    3,185.50x = 7,863,107.31
  5. Step 5: Solve for x
    x = 7,863,107.31/3,185.50
  6. Step 6: Final answer
    x = 2,468.41

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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.