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Finding the Fourth Proportional to 6,731.68, 9,290.64 and 4,254.88

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Solution

The fourth proportional to 6,731.68, 9,290.64 and 4,254.88 is: 5,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,731.68 : 9,290.64 = 4,254.88 : x
  2. Step 2: Convert to fraction form
    6,731.68/9,290.64 = 4,254.88/x
  3. Step 3: Cross multiply
    6,731.68x = 9,290.64 × 4,254.88
  4. Step 4: Simplify right side
    6,731.68x = 39,530,558.32
  5. Step 5: Solve for x
    x = 39,530,558.32/6,731.68
  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.