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Finding the Fourth Proportional to 9,171.14, 12,655.97 and 4,979.39

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Solution

The fourth proportional to 9,171.14, 12,655.97 and 4,979.39 is: 6,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.14 : 12,655.97 = 4,979.39 : x
  2. Step 2: Convert to fraction form
    9,171.14/12,655.97 = 4,979.39/x
  3. Step 3: Cross multiply
    9,171.14x = 12,655.97 × 4,979.39
  4. Step 4: Simplify right side
    9,171.14x = 63,018,947.18
  5. Step 5: Solve for x
    x = 63,018,947.18/9,171.14
  6. Step 6: Final answer
    x = 6,871.44

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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.