Home / 9,171.13-12,656.23-4,979.38

Finding the Fourth Proportional to 9,171.13, 12,656.23 and 4,979.38

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Solution

The fourth proportional to 9,171.13, 12,656.23 and 4,979.38 is: 6,871.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.13 : 12,656.23 = 4,979.38 : x
  2. Step 2: Convert to fraction form
    9,171.13/12,656.23 = 4,979.38/x
  3. Step 3: Cross multiply
    9,171.13x = 12,656.23 × 4,979.38
  4. Step 4: Simplify right side
    9,171.13x = 63,020,178.54
  5. Step 5: Solve for x
    x = 63,020,178.54/9,171.13
  6. Step 6: Final answer
    x = 6,871.58

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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.