Home / 3,429.76-5,141.40-3,115.48

Finding the Fourth Proportional to 3,429.76, 5,141.40 and 3,115.48

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Solution

The fourth proportional to 3,429.76, 5,141.40 and 3,115.48 is: 4,670.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.76 : 5,141.40 = 3,115.48 : x
  2. Step 2: Convert to fraction form
    3,429.76/5,141.40 = 3,115.48/x
  3. Step 3: Cross multiply
    3,429.76x = 5,141.40 × 3,115.48
  4. Step 4: Simplify right side
    3,429.76x = 16,017,928.87
  5. Step 5: Solve for x
    x = 16,017,928.87/3,429.76
  6. Step 6: Final answer
    x = 4,670.28

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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.