Home / 2,653.20-3,979.32-1,009.38

Finding the Fourth Proportional to 2,653.20, 3,979.32 and 1,009.38

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Solution

The fourth proportional to 2,653.20, 3,979.32 and 1,009.38 is: 1,513.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.20 : 3,979.32 = 1,009.38 : x
  2. Step 2: Convert to fraction form
    2,653.20/3,979.32 = 1,009.38/x
  3. Step 3: Cross multiply
    2,653.20x = 3,979.32 × 1,009.38
  4. Step 4: Simplify right side
    2,653.20x = 4,016,646.02
  5. Step 5: Solve for x
    x = 4,016,646.02/2,653.20
  6. Step 6: Final answer
    x = 1,513.89

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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.