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Finding the Fourth Proportional to 3,791.00, 5,686.20 and 1,325.57

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Solution

The fourth proportional to 3,791.00, 5,686.20 and 1,325.57 is: 1,988.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.00 : 5,686.20 = 1,325.57 : x
  2. Step 2: Convert to fraction form
    3,791.00/5,686.20 = 1,325.57/x
  3. Step 3: Cross multiply
    3,791.00x = 5,686.20 × 1,325.57
  4. Step 4: Simplify right side
    3,791.00x = 7,537,427.70
  5. Step 5: Solve for x
    x = 7,537,427.70/3,791.00
  6. Step 6: Final answer
    x = 1,988.24

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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.