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Finding the Fourth Proportional to 6,611.55, 9,917.37 and 2,862.45

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Solution

The fourth proportional to 6,611.55, 9,917.37 and 2,862.45 is: 4,293.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.55 : 9,917.37 = 2,862.45 : x
  2. Step 2: Convert to fraction form
    6,611.55/9,917.37 = 2,862.45/x
  3. Step 3: Cross multiply
    6,611.55x = 9,917.37 × 2,862.45
  4. Step 4: Simplify right side
    6,611.55x = 28,387,975.76
  5. Step 5: Solve for x
    x = 28,387,975.76/6,611.55
  6. Step 6: Final answer
    x = 4,293.69

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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.