Home / 2,124.66-3,187.68-1,085.22

Finding the Fourth Proportional to 2,124.66, 3,187.68 and 1,085.22

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Solution

The fourth proportional to 2,124.66, 3,187.68 and 1,085.22 is: 1,628.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.66 : 3,187.68 = 1,085.22 : x
  2. Step 2: Convert to fraction form
    2,124.66/3,187.68 = 1,085.22/x
  3. Step 3: Cross multiply
    2,124.66x = 3,187.68 × 1,085.22
  4. Step 4: Simplify right side
    2,124.66x = 3,459,334.09
  5. Step 5: Solve for x
    x = 3,459,334.09/2,124.66
  6. Step 6: Final answer
    x = 1,628.18

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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.