Home / 8,157.64-11,257.68-4,431.64

Finding the Fourth Proportional to 8,157.64, 11,257.68 and 4,431.64

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Solution

The fourth proportional to 8,157.64, 11,257.68 and 4,431.64 is: 6,115.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.64 : 11,257.68 = 4,431.64 : x
  2. Step 2: Convert to fraction form
    8,157.64/11,257.68 = 4,431.64/x
  3. Step 3: Cross multiply
    8,157.64x = 11,257.68 × 4,431.64
  4. Step 4: Simplify right side
    8,157.64x = 49,889,985.00
  5. Step 5: Solve for x
    x = 49,889,985.00/8,157.64
  6. Step 6: Final answer
    x = 6,115.74

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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.