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Finding the Fourth Proportional to 6,340.64, 8,748.54 and 3,687.48

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Solution

The fourth proportional to 6,340.64, 8,748.54 and 3,687.48 is: 5,087.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,340.64 : 8,748.54 = 3,687.48 : x
  2. Step 2: Convert to fraction form
    6,340.64/8,748.54 = 3,687.48/x
  3. Step 3: Cross multiply
    6,340.64x = 8,748.54 × 3,687.48
  4. Step 4: Simplify right side
    6,340.64x = 32,260,066.28
  5. Step 5: Solve for x
    x = 32,260,066.28/6,340.64
  6. Step 6: Final answer
    x = 5,087.83

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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.