Home / 3,110.58-4,290.84-1,989.27

Finding the Fourth Proportional to 3,110.58, 4,290.84 and 1,989.27

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Solution

The fourth proportional to 3,110.58, 4,290.84 and 1,989.27 is: 2,744.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.58 : 4,290.84 = 1,989.27 : x
  2. Step 2: Convert to fraction form
    3,110.58/4,290.84 = 1,989.27/x
  3. Step 3: Cross multiply
    3,110.58x = 4,290.84 × 1,989.27
  4. Step 4: Simplify right side
    3,110.58x = 8,535,639.29
  5. Step 5: Solve for x
    x = 8,535,639.29/3,110.58
  6. Step 6: Final answer
    x = 2,744.07

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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.