Home / 3,137.22-4,329.72-1,811.28

Finding the Fourth Proportional to 3,137.22, 4,329.72 and 1,811.28

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Solution

The fourth proportional to 3,137.22, 4,329.72 and 1,811.28 is: 2,499.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.22 : 4,329.72 = 1,811.28 : x
  2. Step 2: Convert to fraction form
    3,137.22/4,329.72 = 1,811.28/x
  3. Step 3: Cross multiply
    3,137.22x = 4,329.72 × 1,811.28
  4. Step 4: Simplify right side
    3,137.22x = 7,842,335.24
  5. Step 5: Solve for x
    x = 7,842,335.24/3,137.22
  6. Step 6: Final answer
    x = 2,499.77

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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.