Home / 9,175.89-12,662.75-5,399.20

Finding the Fourth Proportional to 9,175.89, 12,662.75 and 5,399.20

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Solution

The fourth proportional to 9,175.89, 12,662.75 and 5,399.20 is: 7,450.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,175.89 : 12,662.75 = 5,399.20 : x
  2. Step 2: Convert to fraction form
    9,175.89/12,662.75 = 5,399.20/x
  3. Step 3: Cross multiply
    9,175.89x = 12,662.75 × 5,399.20
  4. Step 4: Simplify right side
    9,175.89x = 68,368,719.80
  5. Step 5: Solve for x
    x = 68,368,719.80/9,175.89
  6. Step 6: Final answer
    x = 7,450.91

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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.