Home / 8,511.20-12,766.82-4,640.21

Finding the Fourth Proportional to 8,511.20, 12,766.82 and 4,640.21

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Solution

The fourth proportional to 8,511.20, 12,766.82 and 4,640.21 is: 6,960.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.20 : 12,766.82 = 4,640.21 : x
  2. Step 2: Convert to fraction form
    8,511.20/12,766.82 = 4,640.21/x
  3. Step 3: Cross multiply
    8,511.20x = 12,766.82 × 4,640.21
  4. Step 4: Simplify right side
    8,511.20x = 59,240,638.80
  5. Step 5: Solve for x
    x = 59,240,638.80/8,511.20
  6. Step 6: Final answer
    x = 6,960.32

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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.