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Finding the Fourth Proportional to 3,951.18, 5,926.44 and 1,485.78

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Solution

The fourth proportional to 3,951.18, 5,926.44 and 1,485.78 is: 2,228.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.18 : 5,926.44 = 1,485.78 : x
  2. Step 2: Convert to fraction form
    3,951.18/5,926.44 = 1,485.78/x
  3. Step 3: Cross multiply
    3,951.18x = 5,926.44 × 1,485.78
  4. Step 4: Simplify right side
    3,951.18x = 8,805,386.02
  5. Step 5: Solve for x
    x = 8,805,386.02/3,951.18
  6. Step 6: Final answer
    x = 2,228.55

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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.