Home / 4,078.60-6,113.10-2,129.80

Finding the Fourth Proportional to 4,078.60, 6,113.10 and 2,129.80

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Solution

The fourth proportional to 4,078.60, 6,113.10 and 2,129.80 is: 3,192.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.60 : 6,113.10 = 2,129.80 : x
  2. Step 2: Convert to fraction form
    4,078.60/6,113.10 = 2,129.80/x
  3. Step 3: Cross multiply
    4,078.60x = 6,113.10 × 2,129.80
  4. Step 4: Simplify right side
    4,078.60x = 13,019,680.38
  5. Step 5: Solve for x
    x = 13,019,680.38/4,078.60
  6. Step 6: Final answer
    x = 3,192.19

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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.