Home / 3,325.80-4,989.30-1,378.14

Finding the Fourth Proportional to 3,325.80, 4,989.30 and 1,378.14

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Solution

The fourth proportional to 3,325.80, 4,989.30 and 1,378.14 is: 2,067.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,325.80 : 4,989.30 = 1,378.14 : x
  2. Step 2: Convert to fraction form
    3,325.80/4,989.30 = 1,378.14/x
  3. Step 3: Cross multiply
    3,325.80x = 4,989.30 × 1,378.14
  4. Step 4: Simplify right side
    3,325.80x = 6,875,953.90
  5. Step 5: Solve for x
    x = 6,875,953.90/3,325.80
  6. Step 6: Final answer
    x = 2,067.46

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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.