Home / 3,622.90-5,436.28-1,431.66

Finding the Fourth Proportional to 3,622.90, 5,436.28 and 1,431.66

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Solution

The fourth proportional to 3,622.90, 5,436.28 and 1,431.66 is: 2,148.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,622.90 : 5,436.28 = 1,431.66 : x
  2. Step 2: Convert to fraction form
    3,622.90/5,436.28 = 1,431.66/x
  3. Step 3: Cross multiply
    3,622.90x = 5,436.28 × 1,431.66
  4. Step 4: Simplify right side
    3,622.90x = 7,782,904.62
  5. Step 5: Solve for x
    x = 7,782,904.62/3,622.90
  6. Step 6: Final answer
    x = 2,148.25

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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.