Home / 4,090.76-6,137.12-1,317.69

Finding the Fourth Proportional to 4,090.76, 6,137.12 and 1,317.69

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Solution

The fourth proportional to 4,090.76, 6,137.12 and 1,317.69 is: 1,976.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.76 : 6,137.12 = 1,317.69 : x
  2. Step 2: Convert to fraction form
    4,090.76/6,137.12 = 1,317.69/x
  3. Step 3: Cross multiply
    4,090.76x = 6,137.12 × 1,317.69
  4. Step 4: Simplify right side
    4,090.76x = 8,086,821.65
  5. Step 5: Solve for x
    x = 8,086,821.65/4,090.76
  6. Step 6: Final answer
    x = 1,976.85

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1.5x scale

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.