Home / 8,979.36-12,386.16-6,180

Finding the Fourth Proportional to 8,979.36, 12,386.16 and 6,180

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Solution

The fourth proportional to 8,979.36, 12,386.16 and 6,180 is: 8,524.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.36 : 12,386.16 = 6,180 : x
  2. Step 2: Convert to fraction form
    8,979.36/12,386.16 = 6,180/x
  3. Step 3: Cross multiply
    8,979.36x = 12,386.16 × 6,180
  4. Step 4: Simplify right side
    8,979.36x = 76,546,468.80
  5. Step 5: Solve for x
    x = 76,546,468.80/8,979.36
  6. Step 6: Final answer
    x = 8,524.71

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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.