Home / 2,185.28-3,279.08-1,455.20

Finding the Fourth Proportional to 2,185.28, 3,279.08 and 1,455.20

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Solution

The fourth proportional to 2,185.28, 3,279.08 and 1,455.20 is: 2,183.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.28 : 3,279.08 = 1,455.20 : x
  2. Step 2: Convert to fraction form
    2,185.28/3,279.08 = 1,455.20/x
  3. Step 3: Cross multiply
    2,185.28x = 3,279.08 × 1,455.20
  4. Step 4: Simplify right side
    2,185.28x = 4,771,717.22
  5. Step 5: Solve for x
    x = 4,771,717.22/2,185.28
  6. Step 6: Final answer
    x = 2,183.57

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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.