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Finding the Fourth Proportional to 3,980.48, 5,966.42 and 2,520.06

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Solution

The fourth proportional to 3,980.48, 5,966.42 and 2,520.06 is: 3,777.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.48 : 5,966.42 = 2,520.06 : x
  2. Step 2: Convert to fraction form
    3,980.48/5,966.42 = 2,520.06/x
  3. Step 3: Cross multiply
    3,980.48x = 5,966.42 × 2,520.06
  4. Step 4: Simplify right side
    3,980.48x = 15,035,736.39
  5. Step 5: Solve for x
    x = 15,035,736.39/3,980.48
  6. Step 6: Final answer
    x = 3,777.37

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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.