Home / 5,129.76-7,693.54-1,620.04

Finding the Fourth Proportional to 5,129.76, 7,693.54 and 1,620.04

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Solution

The fourth proportional to 5,129.76, 7,693.54 and 1,620.04 is: 2,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.76 : 7,693.54 = 1,620.04 : x
  2. Step 2: Convert to fraction form
    5,129.76/7,693.54 = 1,620.04/x
  3. Step 3: Cross multiply
    5,129.76x = 7,693.54 × 1,620.04
  4. Step 4: Simplify right side
    5,129.76x = 12,463,842.54
  5. Step 5: Solve for x
    x = 12,463,842.54/5,129.76
  6. Step 6: Final answer
    x = 2,429.71

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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.