Home / 2,195.04-3,291.84-1,221.60

Finding the Fourth Proportional to 2,195.04, 3,291.84 and 1,221.60

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Solution

The fourth proportional to 2,195.04, 3,291.84 and 1,221.60 is: 1,832.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.04 : 3,291.84 = 1,221.60 : x
  2. Step 2: Convert to fraction form
    2,195.04/3,291.84 = 1,221.60/x
  3. Step 3: Cross multiply
    2,195.04x = 3,291.84 × 1,221.60
  4. Step 4: Simplify right side
    2,195.04x = 4,021,311.74
  5. Step 5: Solve for x
    x = 4,021,311.74/2,195.04
  6. Step 6: Final answer
    x = 1,832.00

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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.