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Finding the Fourth Proportional to 3,953.18, 5,928.12 and 1,486.28

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Solution

The fourth proportional to 3,953.18, 5,928.12 and 1,486.28 is: 2,228.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.18 : 5,928.12 = 1,486.28 : x
  2. Step 2: Convert to fraction form
    3,953.18/5,928.12 = 1,486.28/x
  3. Step 3: Cross multiply
    3,953.18x = 5,928.12 × 1,486.28
  4. Step 4: Simplify right side
    3,953.18x = 8,810,846.19
  5. Step 5: Solve for x
    x = 8,810,846.19/3,953.18
  6. Step 6: Final answer
    x = 2,228.80

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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.