Home / 3,365.20-5,042.40-1,719.28

Finding the Fourth Proportional to 3,365.20, 5,042.40 and 1,719.28

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Solution

The fourth proportional to 3,365.20, 5,042.40 and 1,719.28 is: 2,576.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,365.20 : 5,042.40 = 1,719.28 : x
  2. Step 2: Convert to fraction form
    3,365.20/5,042.40 = 1,719.28/x
  3. Step 3: Cross multiply
    3,365.20x = 5,042.40 × 1,719.28
  4. Step 4: Simplify right side
    3,365.20x = 8,669,297.47
  5. Step 5: Solve for x
    x = 8,669,297.47/3,365.20
  6. Step 6: Final answer
    x = 2,576.16

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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.