Home / 2,639.36-3,955.10-2,405.97

Finding the Fourth Proportional to 2,639.36, 3,955.10 and 2,405.97

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Solution

The fourth proportional to 2,639.36, 3,955.10 and 2,405.97 is: 3,605.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.36 : 3,955.10 = 2,405.97 : x
  2. Step 2: Convert to fraction form
    2,639.36/3,955.10 = 2,405.97/x
  3. Step 3: Cross multiply
    2,639.36x = 3,955.10 × 2,405.97
  4. Step 4: Simplify right side
    2,639.36x = 9,515,834.11
  5. Step 5: Solve for x
    x = 9,515,834.11/2,639.36
  6. Step 6: Final answer
    x = 3,605.36

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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.