Home / 9,379.20-12,941.88-5,187.48

Finding the Fourth Proportional to 9,379.20, 12,941.88 and 5,187.48

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Solution

The fourth proportional to 9,379.20, 12,941.88 and 5,187.48 is: 7,157.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,379.20 : 12,941.88 = 5,187.48 : x
  2. Step 2: Convert to fraction form
    9,379.20/12,941.88 = 5,187.48/x
  3. Step 3: Cross multiply
    9,379.20x = 12,941.88 × 5,187.48
  4. Step 4: Simplify right side
    9,379.20x = 67,135,743.66
  5. Step 5: Solve for x
    x = 67,135,743.66/9,379.20
  6. Step 6: Final answer
    x = 7,157.94

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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.