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Finding the Fourth Proportional to 9,611.10, 13,261.05 and 5,418.54

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Solution

The fourth proportional to 9,611.10, 13,261.05 and 5,418.54 is: 7,476.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,611.10 : 13,261.05 = 5,418.54 : x
  2. Step 2: Convert to fraction form
    9,611.10/13,261.05 = 5,418.54/x
  3. Step 3: Cross multiply
    9,611.10x = 13,261.05 × 5,418.54
  4. Step 4: Simplify right side
    9,611.10x = 71,855,529.87
  5. Step 5: Solve for x
    x = 71,855,529.87/9,611.10
  6. Step 6: Final answer
    x = 7,476.31

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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.