Home / 9,149.96-12,626.48-5,171.28

Finding the Fourth Proportional to 9,149.96, 12,626.48 and 5,171.28

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Solution

The fourth proportional to 9,149.96, 12,626.48 and 5,171.28 is: 7,136.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,149.96 : 12,626.48 = 5,171.28 : x
  2. Step 2: Convert to fraction form
    9,149.96/12,626.48 = 5,171.28/x
  3. Step 3: Cross multiply
    9,149.96x = 12,626.48 × 5,171.28
  4. Step 4: Simplify right side
    9,149.96x = 65,295,029.07
  5. Step 5: Solve for x
    x = 65,295,029.07/9,149.96
  6. Step 6: Final answer
    x = 7,136.10

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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.