Home / 3,131.29-4,322.06-1,805.53

Finding the Fourth Proportional to 3,131.29, 4,322.06 and 1,805.53

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Solution

The fourth proportional to 3,131.29, 4,322.06 and 1,805.53 is: 2,492.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.29 : 4,322.06 = 1,805.53 : x
  2. Step 2: Convert to fraction form
    3,131.29/4,322.06 = 1,805.53/x
  3. Step 3: Cross multiply
    3,131.29x = 4,322.06 × 1,805.53
  4. Step 4: Simplify right side
    3,131.29x = 7,803,578.35
  5. Step 5: Solve for x
    x = 7,803,578.35/3,131.29
  6. Step 6: Final answer
    x = 2,492.13

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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.