Home / 9,149.52-12,628.16-5,170.68

Finding the Fourth Proportional to 9,149.52, 12,628.16 and 5,170.68

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Solution

The fourth proportional to 9,149.52, 12,628.16 and 5,170.68 is: 7,136.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,149.52 : 12,628.16 = 5,170.68 : x
  2. Step 2: Convert to fraction form
    9,149.52/12,628.16 = 5,170.68/x
  3. Step 3: Cross multiply
    9,149.52x = 12,628.16 × 5,170.68
  4. Step 4: Simplify right side
    9,149.52x = 65,296,174.35
  5. Step 5: Solve for x
    x = 65,296,174.35/9,149.52
  6. Step 6: Final answer
    x = 7,136.57

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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.