Home / 2,386.29-3,579.66-905.50

Finding the Fourth Proportional to 2,386.29, 3,579.66 and 905.50

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Solution

The fourth proportional to 2,386.29, 3,579.66 and 905.50 is: 1,358.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.29 : 3,579.66 = 905.50 : x
  2. Step 2: Convert to fraction form
    2,386.29/3,579.66 = 905.50/x
  3. Step 3: Cross multiply
    2,386.29x = 3,579.66 × 905.50
  4. Step 4: Simplify right side
    2,386.29x = 3,241,382.13
  5. Step 5: Solve for x
    x = 3,241,382.13/2,386.29
  6. Step 6: Final answer
    x = 1,358.34

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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.