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Finding the Fourth Proportional to 5,726.87, 7,902.98 and 3,208.98

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Solution

The fourth proportional to 5,726.87, 7,902.98 and 3,208.98 is: 4,428.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,726.87 : 7,902.98 = 3,208.98 : x
  2. Step 2: Convert to fraction form
    5,726.87/7,902.98 = 3,208.98/x
  3. Step 3: Cross multiply
    5,726.87x = 7,902.98 × 3,208.98
  4. Step 4: Simplify right side
    5,726.87x = 25,360,473.27
  5. Step 5: Solve for x
    x = 25,360,473.27/5,726.87
  6. Step 6: Final answer
    x = 4,428.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.