Home / 4,087.41-6,129.85-2,138.55

Finding the Fourth Proportional to 4,087.41, 6,129.85 and 2,138.55

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Solution

The fourth proportional to 4,087.41, 6,129.85 and 2,138.55 is: 3,207.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.41 : 6,129.85 = 2,138.55 : x
  2. Step 2: Convert to fraction form
    4,087.41/6,129.85 = 2,138.55/x
  3. Step 3: Cross multiply
    4,087.41x = 6,129.85 × 2,138.55
  4. Step 4: Simplify right side
    4,087.41x = 13,108,990.72
  5. Step 5: Solve for x
    x = 13,108,990.72/4,087.41
  6. Step 6: Final answer
    x = 3,207.16

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1.5x scale

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.