Home / 3,905.44-5,386.70-2,487.65

Finding the Fourth Proportional to 3,905.44, 5,386.70 and 2,487.65

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Solution

The fourth proportional to 3,905.44, 5,386.70 and 2,487.65 is: 3,431.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.44 : 5,386.70 = 2,487.65 : x
  2. Step 2: Convert to fraction form
    3,905.44/5,386.70 = 2,487.65/x
  3. Step 3: Cross multiply
    3,905.44x = 5,386.70 × 2,487.65
  4. Step 4: Simplify right side
    3,905.44x = 13,400,203.54
  5. Step 5: Solve for x
    x = 13,400,203.54/3,905.44
  6. Step 6: Final answer
    x = 3,431.17

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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.