Home / 2,188.50-3,283.14-1,215.66

Finding the Fourth Proportional to 2,188.50, 3,283.14 and 1,215.66

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Solution

The fourth proportional to 2,188.50, 3,283.14 and 1,215.66 is: 1,823.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.50 : 3,283.14 = 1,215.66 : x
  2. Step 2: Convert to fraction form
    2,188.50/3,283.14 = 1,215.66/x
  3. Step 3: Cross multiply
    2,188.50x = 3,283.14 × 1,215.66
  4. Step 4: Simplify right side
    2,188.50x = 3,991,181.97
  5. Step 5: Solve for x
    x = 3,991,181.97/2,188.50
  6. Step 6: Final answer
    x = 1,823.71

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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.