Home / 4,220.58-5,820.75-2,728.02

Finding the Fourth Proportional to 4,220.58, 5,820.75 and 2,728.02

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Solution

The fourth proportional to 4,220.58, 5,820.75 and 2,728.02 is: 3,762.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.58 : 5,820.75 = 2,728.02 : x
  2. Step 2: Convert to fraction form
    4,220.58/5,820.75 = 2,728.02/x
  3. Step 3: Cross multiply
    4,220.58x = 5,820.75 × 2,728.02
  4. Step 4: Simplify right side
    4,220.58x = 15,879,122.42
  5. Step 5: Solve for x
    x = 15,879,122.42/4,220.58
  6. Step 6: Final answer
    x = 3,762.31

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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.