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Finding the Fourth Proportional to 6,611.22, 9,917.01 and 1,931.76

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Solution

The fourth proportional to 6,611.22, 9,917.01 and 1,931.76 is: 2,897.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.22 : 9,917.01 = 1,931.76 : x
  2. Step 2: Convert to fraction form
    6,611.22/9,917.01 = 1,931.76/x
  3. Step 3: Cross multiply
    6,611.22x = 9,917.01 × 1,931.76
  4. Step 4: Simplify right side
    6,611.22x = 19,157,283.24
  5. Step 5: Solve for x
    x = 19,157,283.24/6,611.22
  6. Step 6: Final answer
    x = 2,897.69

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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.