Home / 9,979.29-13,772.44-6,347.86

Finding the Fourth Proportional to 9,979.29, 13,772.44 and 6,347.86

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Solution

The fourth proportional to 9,979.29, 13,772.44 and 6,347.86 is: 8,760.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.29 : 13,772.44 = 6,347.86 : x
  2. Step 2: Convert to fraction form
    9,979.29/13,772.44 = 6,347.86/x
  3. Step 3: Cross multiply
    9,979.29x = 13,772.44 × 6,347.86
  4. Step 4: Simplify right side
    9,979.29x = 87,425,520.98
  5. Step 5: Solve for x
    x = 87,425,520.98/9,979.29
  6. Step 6: Final answer
    x = 8,760.70

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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.