Home / 3,720.72-5,580.48-1,255.49

Finding the Fourth Proportional to 3,720.72, 5,580.48 and 1,255.49

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Solution

The fourth proportional to 3,720.72, 5,580.48 and 1,255.49 is: 1,883.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.72 : 5,580.48 = 1,255.49 : x
  2. Step 2: Convert to fraction form
    3,720.72/5,580.48 = 1,255.49/x
  3. Step 3: Cross multiply
    3,720.72x = 5,580.48 × 1,255.49
  4. Step 4: Simplify right side
    3,720.72x = 7,006,236.84
  5. Step 5: Solve for x
    x = 7,006,236.84/3,720.72
  6. Step 6: Final answer
    x = 1,883.03

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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.