Home / 3,812.24-5,718.36-1,620.38

Finding the Fourth Proportional to 3,812.24, 5,718.36 and 1,620.38

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Solution

The fourth proportional to 3,812.24, 5,718.36 and 1,620.38 is: 2,430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.24 : 5,718.36 = 1,620.38 : x
  2. Step 2: Convert to fraction form
    3,812.24/5,718.36 = 1,620.38/x
  3. Step 3: Cross multiply
    3,812.24x = 5,718.36 × 1,620.38
  4. Step 4: Simplify right side
    3,812.24x = 9,265,916.18
  5. Step 5: Solve for x
    x = 9,265,916.18/3,812.24
  6. Step 6: Final answer
    x = 2,430.57

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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.