Home / 9,378.22-12,941.68-5,129.14

Finding the Fourth Proportional to 9,378.22, 12,941.68 and 5,129.14

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Solution

The fourth proportional to 9,378.22, 12,941.68 and 5,129.14 is: 7,078.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,378.22 : 12,941.68 = 5,129.14 : x
  2. Step 2: Convert to fraction form
    9,378.22/12,941.68 = 5,129.14/x
  3. Step 3: Cross multiply
    9,378.22x = 12,941.68 × 5,129.14
  4. Step 4: Simplify right side
    9,378.22x = 66,379,688.56
  5. Step 5: Solve for x
    x = 66,379,688.56/9,378.22
  6. Step 6: Final answer
    x = 7,078.07

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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.