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Finding the Fourth Proportional to 6,239.35, 8,611.65 and 4,254.64

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Solution

The fourth proportional to 6,239.35, 8,611.65 and 4,254.64 is: 5,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,239.35 : 8,611.65 = 4,254.64 : x
  2. Step 2: Convert to fraction form
    6,239.35/8,611.65 = 4,254.64/x
  3. Step 3: Cross multiply
    6,239.35x = 8,611.65 × 4,254.64
  4. Step 4: Simplify right side
    6,239.35x = 36,639,470.56
  5. Step 5: Solve for x
    x = 36,639,470.56/6,239.35
  6. Step 6: Final answer
    x = 5,872.32

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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.