Home / 3,879.33-5,353.58-2,386.40

Finding the Fourth Proportional to 3,879.33, 5,353.58 and 2,386.40

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Solution

The fourth proportional to 3,879.33, 5,353.58 and 2,386.40 is: 3,293.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.33 : 5,353.58 = 2,386.40 : x
  2. Step 2: Convert to fraction form
    3,879.33/5,353.58 = 2,386.40/x
  3. Step 3: Cross multiply
    3,879.33x = 5,353.58 × 2,386.40
  4. Step 4: Simplify right side
    3,879.33x = 12,775,744.61
  5. Step 5: Solve for x
    x = 12,775,744.61/3,879.33
  6. Step 6: Final answer
    x = 3,293.29

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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.