Home / 3,948.40-5,929.62-3,409.48

Finding the Fourth Proportional to 3,948.40, 5,929.62 and 3,409.48

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Solution

The fourth proportional to 3,948.40, 5,929.62 and 3,409.48 is: 5,120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.40 : 5,929.62 = 3,409.48 : x
  2. Step 2: Convert to fraction form
    3,948.40/5,929.62 = 3,409.48/x
  3. Step 3: Cross multiply
    3,948.40x = 5,929.62 × 3,409.48
  4. Step 4: Simplify right side
    3,948.40x = 20,216,920.80
  5. Step 5: Solve for x
    x = 20,216,920.80/3,948.40
  6. Step 6: Final answer
    x = 5,120.28

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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.