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Finding the Fourth Proportional to 7,213.45, 9,954.86 and 4,069.63

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Solution

The fourth proportional to 7,213.45, 9,954.86 and 4,069.63 is: 5,616.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213.45 : 9,954.86 = 4,069.63 : x
  2. Step 2: Convert to fraction form
    7,213.45/9,954.86 = 4,069.63/x
  3. Step 3: Cross multiply
    7,213.45x = 9,954.86 × 4,069.63
  4. Step 4: Simplify right side
    7,213.45x = 40,512,526.78
  5. Step 5: Solve for x
    x = 40,512,526.78/7,213.45
  6. Step 6: Final answer
    x = 5,616.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.