Home / 4,085.40-5,629.50-3,379.80

Finding the Fourth Proportional to 4,085.40, 5,629.50 and 3,379.80

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Solution

The fourth proportional to 4,085.40, 5,629.50 and 3,379.80 is: 4,657.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.40 : 5,629.50 = 3,379.80 : x
  2. Step 2: Convert to fraction form
    4,085.40/5,629.50 = 3,379.80/x
  3. Step 3: Cross multiply
    4,085.40x = 5,629.50 × 3,379.80
  4. Step 4: Simplify right side
    4,085.40x = 19,026,584.10
  5. Step 5: Solve for x
    x = 19,026,584.10/4,085.40
  6. Step 6: Final answer
    x = 4,657.21

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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.