Home / 8,511.46-12,762.87-3,890.50

Finding the Fourth Proportional to 8,511.46, 12,762.87 and 3,890.50

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Solution

The fourth proportional to 8,511.46, 12,762.87 and 3,890.50 is: 5,833.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.46 : 12,762.87 = 3,890.50 : x
  2. Step 2: Convert to fraction form
    8,511.46/12,762.87 = 3,890.50/x
  3. Step 3: Cross multiply
    8,511.46x = 12,762.87 × 3,890.50
  4. Step 4: Simplify right side
    8,511.46x = 49,653,945.74
  5. Step 5: Solve for x
    x = 49,653,945.74/8,511.46
  6. Step 6: Final answer
    x = 5,833.78

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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.