Home / 2,188.66-3,283.59-1,215.44

Finding the Fourth Proportional to 2,188.66, 3,283.59 and 1,215.44

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Solution

The fourth proportional to 2,188.66, 3,283.59 and 1,215.44 is: 1,823.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.66 : 3,283.59 = 1,215.44 : x
  2. Step 2: Convert to fraction form
    2,188.66/3,283.59 = 1,215.44/x
  3. Step 3: Cross multiply
    2,188.66x = 3,283.59 × 1,215.44
  4. Step 4: Simplify right side
    2,188.66x = 3,991,019.40
  5. Step 5: Solve for x
    x = 3,991,019.40/2,188.66
  6. Step 6: Final answer
    x = 1,823.50

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Half scale
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Double scale
Find fourth proportional to 2,189.66, 3,285.09 and 1,216.44
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.