Home / 2,118.14-3,175.84-885.22

Finding the Fourth Proportional to 2,118.14, 3,175.84 and 885.22

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Solution

The fourth proportional to 2,118.14, 3,175.84 and 885.22 is: 1,327.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.14 : 3,175.84 = 885.22 : x
  2. Step 2: Convert to fraction form
    2,118.14/3,175.84 = 885.22/x
  3. Step 3: Cross multiply
    2,118.14x = 3,175.84 × 885.22
  4. Step 4: Simplify right side
    2,118.14x = 2,811,317.08
  5. Step 5: Solve for x
    x = 2,811,317.08/2,118.14
  6. Step 6: Final answer
    x = 1,327.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.