Home / 9,979.20-13,771.29-5,730.54

Finding the Fourth Proportional to 9,979.20, 13,771.29 and 5,730.54

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Solution

The fourth proportional to 9,979.20, 13,771.29 and 5,730.54 is: 7,908.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.20 : 13,771.29 = 5,730.54 : x
  2. Step 2: Convert to fraction form
    9,979.20/13,771.29 = 5,730.54/x
  3. Step 3: Cross multiply
    9,979.20x = 13,771.29 × 5,730.54
  4. Step 4: Simplify right side
    9,979.20x = 78,916,928.20
  5. Step 5: Solve for x
    x = 78,916,928.20/9,979.20
  6. Step 6: Final answer
    x = 7,908.14

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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.