Home / 4,091.40-6,137.10-1,129.88

Finding the Fourth Proportional to 4,091.40, 6,137.10 and 1,129.88

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Solution

The fourth proportional to 4,091.40, 6,137.10 and 1,129.88 is: 1,694.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.40 : 6,137.10 = 1,129.88 : x
  2. Step 2: Convert to fraction form
    4,091.40/6,137.10 = 1,129.88/x
  3. Step 3: Cross multiply
    4,091.40x = 6,137.10 × 1,129.88
  4. Step 4: Simplify right side
    4,091.40x = 6,934,201.89
  5. Step 5: Solve for x
    x = 6,934,201.89/4,091.40
  6. Step 6: Final answer
    x = 1,694.82

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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.