Home / 4,078.60-5,627.78-2,309.82

Finding the Fourth Proportional to 4,078.60, 5,627.78 and 2,309.82

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Solution

The fourth proportional to 4,078.60, 5,627.78 and 2,309.82 is: 3,187.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.60 : 5,627.78 = 2,309.82 : x
  2. Step 2: Convert to fraction form
    4,078.60/5,627.78 = 2,309.82/x
  3. Step 3: Cross multiply
    4,078.60x = 5,627.78 × 2,309.82
  4. Step 4: Simplify right side
    4,078.60x = 12,999,158.80
  5. Step 5: Solve for x
    x = 12,999,158.80/4,078.60
  6. Step 6: Final answer
    x = 3,187.16

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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.