Home / 4,092.15-6,138.78-1,317.90

Finding the Fourth Proportional to 4,092.15, 6,138.78 and 1,317.90

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Solution

The fourth proportional to 4,092.15, 6,138.78 and 1,317.90 is: 1,977.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,092.15 : 6,138.78 = 1,317.90 : x
  2. Step 2: Convert to fraction form
    4,092.15/6,138.78 = 1,317.90/x
  3. Step 3: Cross multiply
    4,092.15x = 6,138.78 × 1,317.90
  4. Step 4: Simplify right side
    4,092.15x = 8,090,298.16
  5. Step 5: Solve for x
    x = 8,090,298.16/4,092.15
  6. Step 6: Final answer
    x = 1,977.03

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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.