Home / 9,327.54-12,872.04-5,135.78

Finding the Fourth Proportional to 9,327.54, 12,872.04 and 5,135.78

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Solution

The fourth proportional to 9,327.54, 12,872.04 and 5,135.78 is: 7,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.54 : 12,872.04 = 5,135.78 : x
  2. Step 2: Convert to fraction form
    9,327.54/12,872.04 = 5,135.78/x
  3. Step 3: Cross multiply
    9,327.54x = 12,872.04 × 5,135.78
  4. Step 4: Simplify right side
    9,327.54x = 66,107,965.59
  5. Step 5: Solve for x
    x = 66,107,965.59/9,327.54
  6. Step 6: Final answer
    x = 7,087.40

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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.