Home / 7,078.36-10,611.66-3,126.76

Finding the Fourth Proportional to 7,078.36, 10,611.66 and 3,126.76

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Solution

The fourth proportional to 7,078.36, 10,611.66 and 3,126.76 is: 4,687.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.36 : 10,611.66 = 3,126.76 : x
  2. Step 2: Convert to fraction form
    7,078.36/10,611.66 = 3,126.76/x
  3. Step 3: Cross multiply
    7,078.36x = 10,611.66 × 3,126.76
  4. Step 4: Simplify right side
    7,078.36x = 33,180,114.02
  5. Step 5: Solve for x
    x = 33,180,114.02/7,078.36
  6. Step 6: Final answer
    x = 4,687.54

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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.