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Finding the Fourth Proportional to 9,760.88, 13,480.95 and 6,611.60

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Solution

The fourth proportional to 9,760.88, 13,480.95 and 6,611.60 is: 9,131.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,760.88 : 13,480.95 = 6,611.60 : x
  2. Step 2: Convert to fraction form
    9,760.88/13,480.95 = 6,611.60/x
  3. Step 3: Cross multiply
    9,760.88x = 13,480.95 × 6,611.60
  4. Step 4: Simplify right side
    9,760.88x = 89,130,581.62
  5. Step 5: Solve for x
    x = 89,130,581.62/9,760.88
  6. Step 6: Final answer
    x = 9,131.41

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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.