Home / 9,379.28-12,942.60-5,186.48

Finding the Fourth Proportional to 9,379.28, 12,942.60 and 5,186.48

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Solution

The fourth proportional to 9,379.28, 12,942.60 and 5,186.48 is: 7,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,379.28 : 12,942.60 = 5,186.48 : x
  2. Step 2: Convert to fraction form
    9,379.28/12,942.60 = 5,186.48/x
  3. Step 3: Cross multiply
    9,379.28x = 12,942.60 × 5,186.48
  4. Step 4: Simplify right side
    9,379.28x = 67,126,536.05
  5. Step 5: Solve for x
    x = 67,126,536.05/9,379.28
  6. Step 6: Final answer
    x = 7,156.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.