Home / 9,144.20-12,619.23-5,165.90

Finding the Fourth Proportional to 9,144.20, 12,619.23 and 5,165.90

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Solution

The fourth proportional to 9,144.20, 12,619.23 and 5,165.90 is: 7,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,144.20 : 12,619.23 = 5,165.90 : x
  2. Step 2: Convert to fraction form
    9,144.20/12,619.23 = 5,165.90/x
  3. Step 3: Cross multiply
    9,144.20x = 12,619.23 × 5,165.90
  4. Step 4: Simplify right side
    9,144.20x = 65,189,617.16
  5. Step 5: Solve for x
    x = 65,189,617.16/9,144.20
  6. Step 6: Final answer
    x = 7,129.07

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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.