Home / 6,511.80-9,767.72-2,129.68

Finding the Fourth Proportional to 6,511.80, 9,767.72 and 2,129.68

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Solution

The fourth proportional to 6,511.80, 9,767.72 and 2,129.68 is: 3,194.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.80 : 9,767.72 = 2,129.68 : x
  2. Step 2: Convert to fraction form
    6,511.80/9,767.72 = 2,129.68/x
  3. Step 3: Cross multiply
    6,511.80x = 9,767.72 × 2,129.68
  4. Step 4: Simplify right side
    6,511.80x = 20,802,117.93
  5. Step 5: Solve for x
    x = 20,802,117.93/6,511.80
  6. Step 6: Final answer
    x = 3,194.53

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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.