Home / 9,329.08-12,872.82-5,137.60

Finding the Fourth Proportional to 9,329.08, 12,872.82 and 5,137.60

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Solution

The fourth proportional to 9,329.08, 12,872.82 and 5,137.60 is: 7,089.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,329.08 : 12,872.82 = 5,137.60 : x
  2. Step 2: Convert to fraction form
    9,329.08/12,872.82 = 5,137.60/x
  3. Step 3: Cross multiply
    9,329.08x = 12,872.82 × 5,137.60
  4. Step 4: Simplify right side
    9,329.08x = 66,135,400.03
  5. Step 5: Solve for x
    x = 66,135,400.03/9,329.08
  6. Step 6: Final answer
    x = 7,089.17

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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.