Home / 3,720.90-5,570.39-2,485.25

Finding the Fourth Proportional to 3,720.90, 5,570.39 and 2,485.25

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Solution

The fourth proportional to 3,720.90, 5,570.39 and 2,485.25 is: 3,720.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.90 : 5,570.39 = 2,485.25 : x
  2. Step 2: Convert to fraction form
    3,720.90/5,570.39 = 2,485.25/x
  3. Step 3: Cross multiply
    3,720.90x = 5,570.39 × 2,485.25
  4. Step 4: Simplify right side
    3,720.90x = 13,843,771.47
  5. Step 5: Solve for x
    x = 13,843,771.47/3,720.90
  6. Step 6: Final answer
    x = 3,720.54

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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.