Home / 4,078.45-5,627.76-2,309.61

Finding the Fourth Proportional to 4,078.45, 5,627.76 and 2,309.61

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Solution

The fourth proportional to 4,078.45, 5,627.76 and 2,309.61 is: 3,186.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.45 : 5,627.76 = 2,309.61 : x
  2. Step 2: Convert to fraction form
    4,078.45/5,627.76 = 2,309.61/x
  3. Step 3: Cross multiply
    4,078.45x = 5,627.76 × 2,309.61
  4. Step 4: Simplify right side
    4,078.45x = 12,997,930.77
  5. Step 5: Solve for x
    x = 12,997,930.77/4,078.45
  6. Step 6: Final answer
    x = 3,186.98

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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.