Home / 3,720.16-5,580.06-1,380.62

Finding the Fourth Proportional to 3,720.16, 5,580.06 and 1,380.62

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Solution

The fourth proportional to 3,720.16, 5,580.06 and 1,380.62 is: 2,070.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.16 : 5,580.06 = 1,380.62 : x
  2. Step 2: Convert to fraction form
    3,720.16/5,580.06 = 1,380.62/x
  3. Step 3: Cross multiply
    3,720.16x = 5,580.06 × 1,380.62
  4. Step 4: Simplify right side
    3,720.16x = 7,703,921.58
  5. Step 5: Solve for x
    x = 7,703,921.58/3,720.16
  6. Step 6: Final answer
    x = 2,070.86

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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.