Home / 4,145.50-6,220.63-2,197.70

Finding the Fourth Proportional to 4,145.50, 6,220.63 and 2,197.70

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Solution

The fourth proportional to 4,145.50, 6,220.63 and 2,197.70 is: 3,297.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.50 : 6,220.63 = 2,197.70 : x
  2. Step 2: Convert to fraction form
    4,145.50/6,220.63 = 2,197.70/x
  3. Step 3: Cross multiply
    4,145.50x = 6,220.63 × 2,197.70
  4. Step 4: Simplify right side
    4,145.50x = 13,671,047.45
  5. Step 5: Solve for x
    x = 13,671,047.45/4,145.50
  6. Step 6: Final answer
    x = 3,297.81

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Half scale
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Double scale
Find fourth proportional to 4,146.50, 6,222.13 and 2,198.70
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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.