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Finding the Fourth Proportional to 6,376.65, 8,800.40 and 3,687.98

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Solution

The fourth proportional to 6,376.65, 8,800.40 and 3,687.98 is: 5,089.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,376.65 : 8,800.40 = 3,687.98 : x
  2. Step 2: Convert to fraction form
    6,376.65/8,800.40 = 3,687.98/x
  3. Step 3: Cross multiply
    6,376.65x = 8,800.40 × 3,687.98
  4. Step 4: Simplify right side
    6,376.65x = 32,455,636.75
  5. Step 5: Solve for x
    x = 32,455,636.75/6,376.65
  6. Step 6: Final answer
    x = 5,089.76

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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.