Home / 6,429.69-9,648.18-4,239.45

Finding the Fourth Proportional to 6,429.69, 9,648.18 and 4,239.45

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Solution

The fourth proportional to 6,429.69, 9,648.18 and 4,239.45 is: 6,361.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.69 : 9,648.18 = 4,239.45 : x
  2. Step 2: Convert to fraction form
    6,429.69/9,648.18 = 4,239.45/x
  3. Step 3: Cross multiply
    6,429.69x = 9,648.18 × 4,239.45
  4. Step 4: Simplify right side
    6,429.69x = 40,902,976.70
  5. Step 5: Solve for x
    x = 40,902,976.70/6,429.69
  6. Step 6: Final answer
    x = 6,361.58

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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.