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Finding the Fourth Proportional to 8,607.65, 12,912.82 and 3,677.32

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Solution

The fourth proportional to 8,607.65, 12,912.82 and 3,677.32 is: 5,516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.65 : 12,912.82 = 3,677.32 : x
  2. Step 2: Convert to fraction form
    8,607.65/12,912.82 = 3,677.32/x
  3. Step 3: Cross multiply
    8,607.65x = 12,912.82 × 3,677.32
  4. Step 4: Simplify right side
    8,607.65x = 47,484,571.24
  5. Step 5: Solve for x
    x = 47,484,571.24/8,607.65
  6. Step 6: Final answer
    x = 5,516.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.