Home / 9,319.30-12,857.86-5,540.54

Finding the Fourth Proportional to 9,319.30, 12,857.86 and 5,540.54

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Solution

The fourth proportional to 9,319.30, 12,857.86 and 5,540.54 is: 7,644.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.30 : 12,857.86 = 5,540.54 : x
  2. Step 2: Convert to fraction form
    9,319.30/12,857.86 = 5,540.54/x
  3. Step 3: Cross multiply
    9,319.30x = 12,857.86 × 5,540.54
  4. Step 4: Simplify right side
    9,319.30x = 71,239,487.64
  5. Step 5: Solve for x
    x = 71,239,487.64/9,319.30
  6. Step 6: Final answer
    x = 7,644.30

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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.