Home / 6,761.28-10,129.86-4,127.40

Finding the Fourth Proportional to 6,761.28, 10,129.86 and 4,127.40

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Solution

The fourth proportional to 6,761.28, 10,129.86 and 4,127.40 is: 6,183.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,761.28 : 10,129.86 = 4,127.40 : x
  2. Step 2: Convert to fraction form
    6,761.28/10,129.86 = 4,127.40/x
  3. Step 3: Cross multiply
    6,761.28x = 10,129.86 × 4,127.40
  4. Step 4: Simplify right side
    6,761.28x = 41,809,984.16
  5. Step 5: Solve for x
    x = 41,809,984.16/6,761.28
  6. Step 6: Final answer
    x = 6,183.74

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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.