Home / 2,169.81-2,992.21-2,135.18

Finding the Fourth Proportional to 2,169.81, 2,992.21 and 2,135.18

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Solution

The fourth proportional to 2,169.81, 2,992.21 and 2,135.18 is: 2,944.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.81 : 2,992.21 = 2,135.18 : x
  2. Step 2: Convert to fraction form
    2,169.81/2,992.21 = 2,135.18/x
  3. Step 3: Cross multiply
    2,169.81x = 2,992.21 × 2,135.18
  4. Step 4: Simplify right side
    2,169.81x = 6,388,909.09
  5. Step 5: Solve for x
    x = 6,388,909.09/2,169.81
  6. Step 6: Final answer
    x = 2,944.46

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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.