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Finding the Fourth Proportional to 7,980.55, 11,972.55 and 2,433.75

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Solution

The fourth proportional to 7,980.55, 11,972.55 and 2,433.75 is: 3,651.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.55 : 11,972.55 = 2,433.75 : x
  2. Step 2: Convert to fraction form
    7,980.55/11,972.55 = 2,433.75/x
  3. Step 3: Cross multiply
    7,980.55x = 11,972.55 × 2,433.75
  4. Step 4: Simplify right side
    7,980.55x = 29,138,193.56
  5. Step 5: Solve for x
    x = 29,138,193.56/7,980.55
  6. Step 6: Final answer
    x = 3,651.15

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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.