Home / 6,429.78-9,645.84-2,046.78

Finding the Fourth Proportional to 6,429.78, 9,645.84 and 2,046.78

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Solution

The fourth proportional to 6,429.78, 9,645.84 and 2,046.78 is: 3,070.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.78 : 9,645.84 = 2,046.78 : x
  2. Step 2: Convert to fraction form
    6,429.78/9,645.84 = 2,046.78/x
  3. Step 3: Cross multiply
    6,429.78x = 9,645.84 × 2,046.78
  4. Step 4: Simplify right side
    6,429.78x = 19,742,912.40
  5. Step 5: Solve for x
    x = 19,742,912.40/6,429.78
  6. Step 6: Final answer
    x = 3,070.54

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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.