Home / 3,504.21-5,231.03-2,980.70

Finding the Fourth Proportional to 3,504.21, 5,231.03 and 2,980.70

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Solution

The fourth proportional to 3,504.21, 5,231.03 and 2,980.70 is: 4,449.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,504.21 : 5,231.03 = 2,980.70 : x
  2. Step 2: Convert to fraction form
    3,504.21/5,231.03 = 2,980.70/x
  3. Step 3: Cross multiply
    3,504.21x = 5,231.03 × 2,980.70
  4. Step 4: Simplify right side
    3,504.21x = 15,592,126.45
  5. Step 5: Solve for x
    x = 15,592,126.45/3,504.21
  6. Step 6: Final answer
    x = 4,449.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.