Home / 3,336.80-5,005.76-1,389.15

Finding the Fourth Proportional to 3,336.80, 5,005.76 and 1,389.15

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Solution

The fourth proportional to 3,336.80, 5,005.76 and 1,389.15 is: 2,083.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,336.80 : 5,005.76 = 1,389.15 : x
  2. Step 2: Convert to fraction form
    3,336.80/5,005.76 = 1,389.15/x
  3. Step 3: Cross multiply
    3,336.80x = 5,005.76 × 1,389.15
  4. Step 4: Simplify right side
    3,336.80x = 6,953,744.56
  5. Step 5: Solve for x
    x = 6,953,744.56/3,336.80
  6. Step 6: Final answer
    x = 2,083.96

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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.