Home / 3,580.25-5,371.88-1,390.50

Finding the Fourth Proportional to 3,580.25, 5,371.88 and 1,390.50

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Solution

The fourth proportional to 3,580.25, 5,371.88 and 1,390.50 is: 2,086.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.25 : 5,371.88 = 1,390.50 : x
  2. Step 2: Convert to fraction form
    3,580.25/5,371.88 = 1,390.50/x
  3. Step 3: Cross multiply
    3,580.25x = 5,371.88 × 1,390.50
  4. Step 4: Simplify right side
    3,580.25x = 7,469,592.19
  5. Step 5: Solve for x
    x = 7,469,592.19/3,580.25
  6. Step 6: Final answer
    x = 2,086.34

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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.