Home / 7,979.29-11,935.59-5,607.20

Finding the Fourth Proportional to 7,979.29, 11,935.59 and 5,607.20

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Solution

The fourth proportional to 7,979.29, 11,935.59 and 5,607.20 is: 8,387.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.29 : 11,935.59 = 5,607.20 : x
  2. Step 2: Convert to fraction form
    7,979.29/11,935.59 = 5,607.20/x
  3. Step 3: Cross multiply
    7,979.29x = 11,935.59 × 5,607.20
  4. Step 4: Simplify right side
    7,979.29x = 66,925,240.25
  5. Step 5: Solve for x
    x = 66,925,240.25/7,979.29
  6. Step 6: Final answer
    x = 8,387.37

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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.