Home / 3,621.26-5,430.60-1,429.40

Finding the Fourth Proportional to 3,621.26, 5,430.60 and 1,429.40

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Solution

The fourth proportional to 3,621.26, 5,430.60 and 1,429.40 is: 2,143.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.26 : 5,430.60 = 1,429.40 : x
  2. Step 2: Convert to fraction form
    3,621.26/5,430.60 = 1,429.40/x
  3. Step 3: Cross multiply
    3,621.26x = 5,430.60 × 1,429.40
  4. Step 4: Simplify right side
    3,621.26x = 7,762,499.64
  5. Step 5: Solve for x
    x = 7,762,499.64/3,621.26
  6. Step 6: Final answer
    x = 2,143.59

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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.