Home / 3,620.48-5,430.71-1,429.14

Finding the Fourth Proportional to 3,620.48, 5,430.71 and 1,429.14

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Solution

The fourth proportional to 3,620.48, 5,430.71 and 1,429.14 is: 2,143.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.48 : 5,430.71 = 1,429.14 : x
  2. Step 2: Convert to fraction form
    3,620.48/5,430.71 = 1,429.14/x
  3. Step 3: Cross multiply
    3,620.48x = 5,430.71 × 1,429.14
  4. Step 4: Simplify right side
    3,620.48x = 7,761,244.89
  5. Step 5: Solve for x
    x = 7,761,244.89/3,620.48
  6. Step 6: Final answer
    x = 2,143.71

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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.