Home / 6,511.10-9,766.65-2,128.70

Finding the Fourth Proportional to 6,511.10, 9,766.65 and 2,128.70

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Solution

The fourth proportional to 6,511.10, 9,766.65 and 2,128.70 is: 3,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.10 : 9,766.65 = 2,128.70 : x
  2. Step 2: Convert to fraction form
    6,511.10/9,766.65 = 2,128.70/x
  3. Step 3: Cross multiply
    6,511.10x = 9,766.65 × 2,128.70
  4. Step 4: Simplify right side
    6,511.10x = 20,790,267.86
  5. Step 5: Solve for x
    x = 20,790,267.86/6,511.10
  6. Step 6: Final answer
    x = 3,193.05

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Similar ratio
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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.