Home / 3,137.96-4,329.40-1,811.49

Finding the Fourth Proportional to 3,137.96, 4,329.40 and 1,811.49

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Solution

The fourth proportional to 3,137.96, 4,329.40 and 1,811.49 is: 2,499.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.96 : 4,329.40 = 1,811.49 : x
  2. Step 2: Convert to fraction form
    3,137.96/4,329.40 = 1,811.49/x
  3. Step 3: Cross multiply
    3,137.96x = 4,329.40 × 1,811.49
  4. Step 4: Simplify right side
    3,137.96x = 7,842,664.81
  5. Step 5: Solve for x
    x = 7,842,664.81/3,137.96
  6. Step 6: Final answer
    x = 2,499.29

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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.