Home / 2,788.80-3,847.20-1,669.44

Finding the Fourth Proportional to 2,788.80, 3,847.20 and 1,669.44

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Solution

The fourth proportional to 2,788.80, 3,847.20 and 1,669.44 is: 2,303.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.80 : 3,847.20 = 1,669.44 : x
  2. Step 2: Convert to fraction form
    2,788.80/3,847.20 = 1,669.44/x
  3. Step 3: Cross multiply
    2,788.80x = 3,847.20 × 1,669.44
  4. Step 4: Simplify right side
    2,788.80x = 6,422,669.57
  5. Step 5: Solve for x
    x = 6,422,669.57/2,788.80
  6. Step 6: Final answer
    x = 2,303.02

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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.