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Finding the Fourth Proportional to 6,247.86, 8,621.94 and 3,415.32

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Solution

The fourth proportional to 6,247.86, 8,621.94 and 3,415.32 is: 4,713.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,247.86 : 8,621.94 = 3,415.32 : x
  2. Step 2: Convert to fraction form
    6,247.86/8,621.94 = 3,415.32/x
  3. Step 3: Cross multiply
    6,247.86x = 8,621.94 × 3,415.32
  4. Step 4: Simplify right side
    6,247.86x = 29,446,684.12
  5. Step 5: Solve for x
    x = 29,446,684.12/6,247.86
  6. Step 6: Final answer
    x = 4,713.08

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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.