Home / 6,777.14-10,147.21-5,128.68

Finding the Fourth Proportional to 6,777.14, 10,147.21 and 5,128.68

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Solution

The fourth proportional to 6,777.14, 10,147.21 and 5,128.68 is: 7,679.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,777.14 : 10,147.21 = 5,128.68 : x
  2. Step 2: Convert to fraction form
    6,777.14/10,147.21 = 5,128.68/x
  3. Step 3: Cross multiply
    6,777.14x = 10,147.21 × 5,128.68
  4. Step 4: Simplify right side
    6,777.14x = 52,041,818.21
  5. Step 5: Solve for x
    x = 52,041,818.21/6,777.14
  6. Step 6: Final answer
    x = 7,679.03

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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.