Home / 9,171.18-12,656.25-4,979.34

Finding the Fourth Proportional to 9,171.18, 12,656.25 and 4,979.34

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Solution

The fourth proportional to 9,171.18, 12,656.25 and 4,979.34 is: 6,871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.18 : 12,656.25 = 4,979.34 : x
  2. Step 2: Convert to fraction form
    9,171.18/12,656.25 = 4,979.34/x
  3. Step 3: Cross multiply
    9,171.18x = 12,656.25 × 4,979.34
  4. Step 4: Simplify right side
    9,171.18x = 63,019,771.88
  5. Step 5: Solve for x
    x = 63,019,771.88/9,171.18
  6. Step 6: Final answer
    x = 6,871.50

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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.