Home / 7,758.46-10,706.35-4,221.69

Finding the Fourth Proportional to 7,758.46, 10,706.35 and 4,221.69

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Solution

The fourth proportional to 7,758.46, 10,706.35 and 4,221.69 is: 5,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,758.46 : 10,706.35 = 4,221.69 : x
  2. Step 2: Convert to fraction form
    7,758.46/10,706.35 = 4,221.69/x
  3. Step 3: Cross multiply
    7,758.46x = 10,706.35 × 4,221.69
  4. Step 4: Simplify right side
    7,758.46x = 45,198,890.73
  5. Step 5: Solve for x
    x = 45,198,890.73/7,758.46
  6. Step 6: Final answer
    x = 5,825.76

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Half scale
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Double scale
Find fourth proportional to 7,759.46, 10,707.73 and 4,222.69
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.