Home / 4,620.69-6,374.52-3,128.09

Finding the Fourth Proportional to 4,620.69, 6,374.52 and 3,128.09

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Solution

The fourth proportional to 4,620.69, 6,374.52 and 3,128.09 is: 4,315.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,620.69 : 6,374.52 = 3,128.09 : x
  2. Step 2: Convert to fraction form
    4,620.69/6,374.52 = 3,128.09/x
  3. Step 3: Cross multiply
    4,620.69x = 6,374.52 × 3,128.09
  4. Step 4: Simplify right side
    4,620.69x = 19,940,040.39
  5. Step 5: Solve for x
    x = 19,940,040.39/4,620.69
  6. Step 6: Final answer
    x = 4,315.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.