Home / 3,390.26-5,085.40-1,197.80

Finding the Fourth Proportional to 3,390.26, 5,085.40 and 1,197.80

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Solution

The fourth proportional to 3,390.26, 5,085.40 and 1,197.80 is: 1,796.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.26 : 5,085.40 = 1,197.80 : x
  2. Step 2: Convert to fraction form
    3,390.26/5,085.40 = 1,197.80/x
  3. Step 3: Cross multiply
    3,390.26x = 5,085.40 × 1,197.80
  4. Step 4: Simplify right side
    3,390.26x = 6,091,292.12
  5. Step 5: Solve for x
    x = 6,091,292.12/3,390.26
  6. Step 6: Final answer
    x = 1,796.70

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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.