Home / 2,217.60-3,326.40-1,180.80

Finding the Fourth Proportional to 2,217.60, 3,326.40 and 1,180.80

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Solution

The fourth proportional to 2,217.60, 3,326.40 and 1,180.80 is: 1,771.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.60 : 3,326.40 = 1,180.80 : x
  2. Step 2: Convert to fraction form
    2,217.60/3,326.40 = 1,180.80/x
  3. Step 3: Cross multiply
    2,217.60x = 3,326.40 × 1,180.80
  4. Step 4: Simplify right side
    2,217.60x = 3,927,813.12
  5. Step 5: Solve for x
    x = 3,927,813.12/2,217.60
  6. Step 6: Final answer
    x = 1,771.20

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1.5x scale

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.