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Finding the Fourth Proportional to 6,278.32, 8,664.16 and 3,445.64

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Solution

The fourth proportional to 6,278.32, 8,664.16 and 3,445.64 is: 4,755.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,278.32 : 8,664.16 = 3,445.64 : x
  2. Step 2: Convert to fraction form
    6,278.32/8,664.16 = 3,445.64/x
  3. Step 3: Cross multiply
    6,278.32x = 8,664.16 × 3,445.64
  4. Step 4: Simplify right side
    6,278.32x = 29,853,576.26
  5. Step 5: Solve for x
    x = 29,853,576.26/6,278.32
  6. Step 6: Final answer
    x = 4,755.03

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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.