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Finding the Fourth Proportional to 7,980.56, 11,962.92 and 4,076.24

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Solution

The fourth proportional to 7,980.56, 11,962.92 and 4,076.24 is: 6,110.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.56 : 11,962.92 = 4,076.24 : x
  2. Step 2: Convert to fraction form
    7,980.56/11,962.92 = 4,076.24/x
  3. Step 3: Cross multiply
    7,980.56x = 11,962.92 × 4,076.24
  4. Step 4: Simplify right side
    7,980.56x = 48,763,733.02
  5. Step 5: Solve for x
    x = 48,763,733.02/7,980.56
  6. Step 6: Final answer
    x = 6,110.31

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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.