Home / 3,579.15-5,362.80-1,386.68

Finding the Fourth Proportional to 3,579.15, 5,362.80 and 1,386.68

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Solution

The fourth proportional to 3,579.15, 5,362.80 and 1,386.68 is: 2,077.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.15 : 5,362.80 = 1,386.68 : x
  2. Step 2: Convert to fraction form
    3,579.15/5,362.80 = 1,386.68/x
  3. Step 3: Cross multiply
    3,579.15x = 5,362.80 × 1,386.68
  4. Step 4: Simplify right side
    3,579.15x = 7,436,480.57
  5. Step 5: Solve for x
    x = 7,436,480.57/3,579.15
  6. Step 6: Final answer
    x = 2,077.72

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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.