Home / 2,648.36-3,967.40-1,415.36

Finding the Fourth Proportional to 2,648.36, 3,967.40 and 1,415.36

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Solution

The fourth proportional to 2,648.36, 3,967.40 and 1,415.36 is: 2,120.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648.36 : 3,967.40 = 1,415.36 : x
  2. Step 2: Convert to fraction form
    2,648.36/3,967.40 = 1,415.36/x
  3. Step 3: Cross multiply
    2,648.36x = 3,967.40 × 1,415.36
  4. Step 4: Simplify right side
    2,648.36x = 5,615,299.26
  5. Step 5: Solve for x
    x = 5,615,299.26/2,648.36
  6. Step 6: Final answer
    x = 2,120.29

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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.