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Finding the Fourth Proportional to 8,376, 12,565.92 and 2,904

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Solution

The fourth proportional to 8,376, 12,565.92 and 2,904 is: 4,356.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,376 : 12,565.92 = 2,904 : x
  2. Step 2: Convert to fraction form
    8,376/12,565.92 = 2,904/x
  3. Step 3: Cross multiply
    8,376x = 12,565.92 × 2,904
  4. Step 4: Simplify right side
    8,376x = 36,491,431.68
  5. Step 5: Solve for x
    x = 36,491,431.68/8,376
  6. Step 6: Final answer
    x = 4,356.67

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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.