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Finding the Fourth Proportional to 7,238.64, 10,859.60 and 2,621.64

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Solution

The fourth proportional to 7,238.64, 10,859.60 and 2,621.64 is: 3,933.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,238.64 : 10,859.60 = 2,621.64 : x
  2. Step 2: Convert to fraction form
    7,238.64/10,859.60 = 2,621.64/x
  3. Step 3: Cross multiply
    7,238.64x = 10,859.60 × 2,621.64
  4. Step 4: Simplify right side
    7,238.64x = 28,469,961.74
  5. Step 5: Solve for x
    x = 28,469,961.74/7,238.64
  6. Step 6: Final answer
    x = 3,933.05

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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.