Home / 2,653.12-3,660.78-1,605.28

Finding the Fourth Proportional to 2,653.12, 3,660.78 and 1,605.28

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Solution

The fourth proportional to 2,653.12, 3,660.78 and 1,605.28 is: 2,214.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.12 : 3,660.78 = 1,605.28 : x
  2. Step 2: Convert to fraction form
    2,653.12/3,660.78 = 1,605.28/x
  3. Step 3: Cross multiply
    2,653.12x = 3,660.78 × 1,605.28
  4. Step 4: Simplify right side
    2,653.12x = 5,876,576.92
  5. Step 5: Solve for x
    x = 5,876,576.92/2,653.12
  6. Step 6: Final answer
    x = 2,214.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.