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Finding the Fourth Proportional to 11,584.55, 15,989.55 and 7,611.05

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Solution

The fourth proportional to 11,584.55, 15,989.55 and 7,611.05 is: 10,505.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,584.55 : 15,989.55 = 7,611.05 : x
  2. Step 2: Convert to fraction form
    11,584.55/15,989.55 = 7,611.05/x
  3. Step 3: Cross multiply
    11,584.55x = 15,989.55 × 7,611.05
  4. Step 4: Simplify right side
    11,584.55x = 121,697,275.96
  5. Step 5: Solve for x
    x = 121,697,275.96/11,584.55
  6. Step 6: Final answer
    x = 10,505.13

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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.