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Finding the Fourth Proportional to 7,980.58, 11,958.46 and 3,047.53

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Solution

The fourth proportional to 7,980.58, 11,958.46 and 3,047.53 is: 4,566.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.58 : 11,958.46 = 3,047.53 : x
  2. Step 2: Convert to fraction form
    7,980.58/11,958.46 = 3,047.53/x
  3. Step 3: Cross multiply
    7,980.58x = 11,958.46 × 3,047.53
  4. Step 4: Simplify right side
    7,980.58x = 36,443,792.72
  5. Step 5: Solve for x
    x = 36,443,792.72/7,980.58
  6. Step 6: Final answer
    x = 4,566.56

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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.