Home / 5,979.36-8,979.12-4,939.68

Finding the Fourth Proportional to 5,979.36, 8,979.12 and 4,939.68

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Solution

The fourth proportional to 5,979.36, 8,979.12 and 4,939.68 is: 7,417.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,979.36 : 8,979.12 = 4,939.68 : x
  2. Step 2: Convert to fraction form
    5,979.36/8,979.12 = 4,939.68/x
  3. Step 3: Cross multiply
    5,979.36x = 8,979.12 × 4,939.68
  4. Step 4: Simplify right side
    5,979.36x = 44,353,979.48
  5. Step 5: Solve for x
    x = 44,353,979.48/5,979.36
  6. Step 6: Final answer
    x = 7,417.85

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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.