Home / 9,165.33-12,647.07-5,388.21

Finding the Fourth Proportional to 9,165.33, 12,647.07 and 5,388.21

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Solution

The fourth proportional to 9,165.33, 12,647.07 and 5,388.21 is: 7,435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.33 : 12,647.07 = 5,388.21 : x
  2. Step 2: Convert to fraction form
    9,165.33/12,647.07 = 5,388.21/x
  3. Step 3: Cross multiply
    9,165.33x = 12,647.07 × 5,388.21
  4. Step 4: Simplify right side
    9,165.33x = 68,145,069.04
  5. Step 5: Solve for x
    x = 68,145,069.04/9,165.33
  6. Step 6: Final answer
    x = 7,435.09

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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.