Home / 7,817.29-11,723.65-3,135.79

Finding the Fourth Proportional to 7,817.29, 11,723.65 and 3,135.79

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Solution

The fourth proportional to 7,817.29, 11,723.65 and 3,135.79 is: 4,702.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.29 : 11,723.65 = 3,135.79 : x
  2. Step 2: Convert to fraction form
    7,817.29/11,723.65 = 3,135.79/x
  3. Step 3: Cross multiply
    7,817.29x = 11,723.65 × 3,135.79
  4. Step 4: Simplify right side
    7,817.29x = 36,762,904.43
  5. Step 5: Solve for x
    x = 36,762,904.43/7,817.29
  6. Step 6: Final answer
    x = 4,702.77

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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.