Home / 3,620.28-5,430.42-1,618.77

Finding the Fourth Proportional to 3,620.28, 5,430.42 and 1,618.77

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Solution

The fourth proportional to 3,620.28, 5,430.42 and 1,618.77 is: 2,428.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.28 : 5,430.42 = 1,618.77 : x
  2. Step 2: Convert to fraction form
    3,620.28/5,430.42 = 1,618.77/x
  3. Step 3: Cross multiply
    3,620.28x = 5,430.42 × 1,618.77
  4. Step 4: Simplify right side
    3,620.28x = 8,790,600.98
  5. Step 5: Solve for x
    x = 8,790,600.98/3,620.28
  6. Step 6: Final answer
    x = 2,428.16

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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.