Home / 2,197.11-3,295.68-810.50

Finding the Fourth Proportional to 2,197.11, 3,295.68 and 810.50

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Solution

The fourth proportional to 2,197.11, 3,295.68 and 810.50 is: 1,215.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,197.11 : 3,295.68 = 810.50 : x
  2. Step 2: Convert to fraction form
    2,197.11/3,295.68 = 810.50/x
  3. Step 3: Cross multiply
    2,197.11x = 3,295.68 × 810.50
  4. Step 4: Simplify right side
    2,197.11x = 2,671,132.16
  5. Step 5: Solve for x
    x = 2,671,132.16/2,197.11
  6. Step 6: Final answer
    x = 1,215.75

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Half scale
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Double scale
Find fourth proportional to 2,198.11, 3,297.18 and 811.50
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.