Home / 3,135.12-4,702.77-826.62

Finding the Fourth Proportional to 3,135.12, 4,702.77 and 826.62

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Solution

The fourth proportional to 3,135.12, 4,702.77 and 826.62 is: 1,239.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.12 : 4,702.77 = 826.62 : x
  2. Step 2: Convert to fraction form
    3,135.12/4,702.77 = 826.62/x
  3. Step 3: Cross multiply
    3,135.12x = 4,702.77 × 826.62
  4. Step 4: Simplify right side
    3,135.12x = 3,887,403.74
  5. Step 5: Solve for x
    x = 3,887,403.74/3,135.12
  6. Step 6: Final answer
    x = 1,239.95

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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.