Home / 3,137.82-4,328.90-1,811.22

Finding the Fourth Proportional to 3,137.82, 4,328.90 and 1,811.22

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Solution

The fourth proportional to 3,137.82, 4,328.90 and 1,811.22 is: 2,498.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.82 : 4,328.90 = 1,811.22 : x
  2. Step 2: Convert to fraction form
    3,137.82/4,328.90 = 1,811.22/x
  3. Step 3: Cross multiply
    3,137.82x = 4,328.90 × 1,811.22
  4. Step 4: Simplify right side
    3,137.82x = 7,840,590.26
  5. Step 5: Solve for x
    x = 7,840,590.26/3,137.82
  6. Step 6: Final answer
    x = 2,498.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.