Home / 3,205.10-4,422.78-1,788.80

Finding the Fourth Proportional to 3,205.10, 4,422.78 and 1,788.80

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Solution

The fourth proportional to 3,205.10, 4,422.78 and 1,788.80 is: 2,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.10 : 4,422.78 = 1,788.80 : x
  2. Step 2: Convert to fraction form
    3,205.10/4,422.78 = 1,788.80/x
  3. Step 3: Cross multiply
    3,205.10x = 4,422.78 × 1,788.80
  4. Step 4: Simplify right side
    3,205.10x = 7,911,468.86
  5. Step 5: Solve for x
    x = 7,911,468.86/3,205.10
  6. Step 6: Final answer
    x = 2,468.40

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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.