Home / 8,479.08-12,721.86-3,861

Finding the Fourth Proportional to 8,479.08, 12,721.86 and 3,861

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Solution

The fourth proportional to 8,479.08, 12,721.86 and 3,861 is: 5,792.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.08 : 12,721.86 = 3,861 : x
  2. Step 2: Convert to fraction form
    8,479.08/12,721.86 = 3,861/x
  3. Step 3: Cross multiply
    8,479.08x = 12,721.86 × 3,861
  4. Step 4: Simplify right side
    8,479.08x = 49,119,101.46
  5. Step 5: Solve for x
    x = 49,119,101.46/8,479.08
  6. Step 6: Final answer
    x = 5,792.98

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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.