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Finding the Fourth Proportional to 5,388.28, 7,427.36 and 4,936.30

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Solution

The fourth proportional to 5,388.28, 7,427.36 and 4,936.30 is: 6,804.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.28 : 7,427.36 = 4,936.30 : x
  2. Step 2: Convert to fraction form
    5,388.28/7,427.36 = 4,936.30/x
  3. Step 3: Cross multiply
    5,388.28x = 7,427.36 × 4,936.30
  4. Step 4: Simplify right side
    5,388.28x = 36,663,652.49
  5. Step 5: Solve for x
    x = 36,663,652.49/5,388.28
  6. Step 6: Final answer
    x = 6,804.33

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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.