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Finding the Fourth Proportional to 5,291.87, 7,928.82 and 3,729.11

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Solution

The fourth proportional to 5,291.87, 7,928.82 and 3,729.11 is: 5,587.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.87 : 7,928.82 = 3,729.11 : x
  2. Step 2: Convert to fraction form
    5,291.87/7,928.82 = 3,729.11/x
  3. Step 3: Cross multiply
    5,291.87x = 7,928.82 × 3,729.11
  4. Step 4: Simplify right side
    5,291.87x = 29,567,402.31
  5. Step 5: Solve for x
    x = 29,567,402.31/5,291.87
  6. Step 6: Final answer
    x = 5,587.33

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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.