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Finding the Fourth Proportional to 5,258.76, 7,890.45 and 2,792.97

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Solution

The fourth proportional to 5,258.76, 7,890.45 and 2,792.97 is: 4,190.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,258.76 : 7,890.45 = 2,792.97 : x
  2. Step 2: Convert to fraction form
    5,258.76/7,890.45 = 2,792.97/x
  3. Step 3: Cross multiply
    5,258.76x = 7,890.45 × 2,792.97
  4. Step 4: Simplify right side
    5,258.76x = 22,037,790.14
  5. Step 5: Solve for x
    x = 22,037,790.14/5,258.76
  6. Step 6: Final answer
    x = 4,190.68

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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.