Home / 3,185.48-4,395.94-1,788.20

Finding the Fourth Proportional to 3,185.48, 4,395.94 and 1,788.20

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Solution

The fourth proportional to 3,185.48, 4,395.94 and 1,788.20 is: 2,467.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.48 : 4,395.94 = 1,788.20 : x
  2. Step 2: Convert to fraction form
    3,185.48/4,395.94 = 1,788.20/x
  3. Step 3: Cross multiply
    3,185.48x = 4,395.94 × 1,788.20
  4. Step 4: Simplify right side
    3,185.48x = 7,860,819.91
  5. Step 5: Solve for x
    x = 7,860,819.91/3,185.48
  6. Step 6: Final answer
    x = 2,467.70

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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.