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Finding the Fourth Proportional to 6,611.58, 9,899.60 and 3,485.08

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Solution

The fourth proportional to 6,611.58, 9,899.60 and 3,485.08 is: 5,218.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.58 : 9,899.60 = 3,485.08 : x
  2. Step 2: Convert to fraction form
    6,611.58/9,899.60 = 3,485.08/x
  3. Step 3: Cross multiply
    6,611.58x = 9,899.60 × 3,485.08
  4. Step 4: Simplify right side
    6,611.58x = 34,500,897.97
  5. Step 5: Solve for x
    x = 34,500,897.97/6,611.58
  6. Step 6: Final answer
    x = 5,218.25

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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.