Home / 4,090.80-6,137.40-1,317.41

Finding the Fourth Proportional to 4,090.80, 6,137.40 and 1,317.41

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Solution

The fourth proportional to 4,090.80, 6,137.40 and 1,317.41 is: 1,976.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.80 : 6,137.40 = 1,317.41 : x
  2. Step 2: Convert to fraction form
    4,090.80/6,137.40 = 1,317.41/x
  3. Step 3: Cross multiply
    4,090.80x = 6,137.40 × 1,317.41
  4. Step 4: Simplify right side
    4,090.80x = 8,085,503.93
  5. Step 5: Solve for x
    x = 8,085,503.93/4,090.80
  6. Step 6: Final answer
    x = 1,976.51

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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.