Home / 3,712.40-5,569.62-1,861.28

Finding the Fourth Proportional to 3,712.40, 5,569.62 and 1,861.28

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Solution

The fourth proportional to 3,712.40, 5,569.62 and 1,861.28 is: 2,792.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.40 : 5,569.62 = 1,861.28 : x
  2. Step 2: Convert to fraction form
    3,712.40/5,569.62 = 1,861.28/x
  3. Step 3: Cross multiply
    3,712.40x = 5,569.62 × 1,861.28
  4. Step 4: Simplify right side
    3,712.40x = 10,366,622.31
  5. Step 5: Solve for x
    x = 10,366,622.31/3,712.40
  6. Step 6: Final answer
    x = 2,792.43

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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.