Home / 3,135.18-4,702.40-826.86

Finding the Fourth Proportional to 3,135.18, 4,702.40 and 826.86

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Solution

The fourth proportional to 3,135.18, 4,702.40 and 826.86 is: 1,240.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.18 : 4,702.40 = 826.86 : x
  2. Step 2: Convert to fraction form
    3,135.18/4,702.40 = 826.86/x
  3. Step 3: Cross multiply
    3,135.18x = 4,702.40 × 826.86
  4. Step 4: Simplify right side
    3,135.18x = 3,888,226.46
  5. Step 5: Solve for x
    x = 3,888,226.46/3,135.18
  6. Step 6: Final answer
    x = 1,240.19

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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.