Home / 3,812.48-5,718.40-1,215.36

Finding the Fourth Proportional to 3,812.48, 5,718.40 and 1,215.36

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Solution

The fourth proportional to 3,812.48, 5,718.40 and 1,215.36 is: 1,822.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.48 : 5,718.40 = 1,215.36 : x
  2. Step 2: Convert to fraction form
    3,812.48/5,718.40 = 1,215.36/x
  3. Step 3: Cross multiply
    3,812.48x = 5,718.40 × 1,215.36
  4. Step 4: Simplify right side
    3,812.48x = 6,949,914.62
  5. Step 5: Solve for x
    x = 6,949,914.62/3,812.48
  6. Step 6: Final answer
    x = 1,822.94

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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.