Home / 3,620.08-5,430.52-1,428.52

Finding the Fourth Proportional to 3,620.08, 5,430.52 and 1,428.52

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Solution

The fourth proportional to 3,620.08, 5,430.52 and 1,428.52 is: 2,142.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.08 : 5,430.52 = 1,428.52 : x
  2. Step 2: Convert to fraction form
    3,620.08/5,430.52 = 1,428.52/x
  3. Step 3: Cross multiply
    3,620.08x = 5,430.52 × 1,428.52
  4. Step 4: Simplify right side
    3,620.08x = 7,757,606.43
  5. Step 5: Solve for x
    x = 7,757,606.43/3,620.08
  6. Step 6: Final answer
    x = 2,142.94

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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.