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Finding the Fourth Proportional to 6,240.56, 8,611.56 and 4,917.68

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Solution

The fourth proportional to 6,240.56, 8,611.56 and 4,917.68 is: 6,786.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240.56 : 8,611.56 = 4,917.68 : x
  2. Step 2: Convert to fraction form
    6,240.56/8,611.56 = 4,917.68/x
  3. Step 3: Cross multiply
    6,240.56x = 8,611.56 × 4,917.68
  4. Step 4: Simplify right side
    6,240.56x = 42,348,896.38
  5. Step 5: Solve for x
    x = 42,348,896.38/6,240.56
  6. Step 6: Final answer
    x = 6,786.07

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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.