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Finding the Fourth Proportional to 3,862.76, 5,792.90 and 1,265.09

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Solution

The fourth proportional to 3,862.76, 5,792.90 and 1,265.09 is: 1,897.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862.76 : 5,792.90 = 1,265.09 : x
  2. Step 2: Convert to fraction form
    3,862.76/5,792.90 = 1,265.09/x
  3. Step 3: Cross multiply
    3,862.76x = 5,792.90 × 1,265.09
  4. Step 4: Simplify right side
    3,862.76x = 7,328,504.57
  5. Step 5: Solve for x
    x = 7,328,504.57/3,862.76
  6. Step 6: Final answer
    x = 1,897.22

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1.5x scale

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.