Home / 8,979.36-13,466.52-3,428.88

Finding the Fourth Proportional to 8,979.36, 13,466.52 and 3,428.88

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Solution

The fourth proportional to 8,979.36, 13,466.52 and 3,428.88 is: 5,142.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.36 : 13,466.52 = 3,428.88 : x
  2. Step 2: Convert to fraction form
    8,979.36/13,466.52 = 3,428.88/x
  3. Step 3: Cross multiply
    8,979.36x = 13,466.52 × 3,428.88
  4. Step 4: Simplify right side
    8,979.36x = 46,175,081.10
  5. Step 5: Solve for x
    x = 46,175,081.10/8,979.36
  6. Step 6: Final answer
    x = 5,142.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.