Home / 9,171.25-12,656.34-4,979.50

Finding the Fourth Proportional to 9,171.25, 12,656.34 and 4,979.50

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Solution

The fourth proportional to 9,171.25, 12,656.34 and 4,979.50 is: 6,871.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.25 : 12,656.34 = 4,979.50 : x
  2. Step 2: Convert to fraction form
    9,171.25/12,656.34 = 4,979.50/x
  3. Step 3: Cross multiply
    9,171.25x = 12,656.34 × 4,979.50
  4. Step 4: Simplify right side
    9,171.25x = 63,022,245.03
  5. Step 5: Solve for x
    x = 63,022,245.03/9,171.25
  6. Step 6: Final answer
    x = 6,871.72

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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.