Home / 3,580.20-5,372.26-1,389.02

Finding the Fourth Proportional to 3,580.20, 5,372.26 and 1,389.02

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Solution

The fourth proportional to 3,580.20, 5,372.26 and 1,389.02 is: 2,084.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.20 : 5,372.26 = 1,389.02 : x
  2. Step 2: Convert to fraction form
    3,580.20/5,372.26 = 1,389.02/x
  3. Step 3: Cross multiply
    3,580.20x = 5,372.26 × 1,389.02
  4. Step 4: Simplify right side
    3,580.20x = 7,462,146.25
  5. Step 5: Solve for x
    x = 7,462,146.25/3,580.20
  6. Step 6: Final answer
    x = 2,084.28

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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.