Home / 3,620.90-5,433.28-1,429.65

Finding the Fourth Proportional to 3,620.90, 5,433.28 and 1,429.65

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Solution

The fourth proportional to 3,620.90, 5,433.28 and 1,429.65 is: 2,145.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.90 : 5,433.28 = 1,429.65 : x
  2. Step 2: Convert to fraction form
    3,620.90/5,433.28 = 1,429.65/x
  3. Step 3: Cross multiply
    3,620.90x = 5,433.28 × 1,429.65
  4. Step 4: Simplify right side
    3,620.90x = 7,767,685.18
  5. Step 5: Solve for x
    x = 7,767,685.18/3,620.90
  6. Step 6: Final answer
    x = 2,145.23

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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.