Home / 3,720.24-5,579.75-1,379.70

Finding the Fourth Proportional to 3,720.24, 5,579.75 and 1,379.70

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Solution

The fourth proportional to 3,720.24, 5,579.75 and 1,379.70 is: 2,069.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.24 : 5,579.75 = 1,379.70 : x
  2. Step 2: Convert to fraction form
    3,720.24/5,579.75 = 1,379.70/x
  3. Step 3: Cross multiply
    3,720.24x = 5,579.75 × 1,379.70
  4. Step 4: Simplify right side
    3,720.24x = 7,698,363.60
  5. Step 5: Solve for x
    x = 7,698,363.60/3,720.24
  6. Step 6: Final answer
    x = 2,069.32

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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.