Home / 1,081.41-1,621.36-351.19

Finding the Fourth Proportional to 1,081.41, 1,621.36 and 351.19

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Solution

The fourth proportional to 1,081.41, 1,621.36 and 351.19 is: 526.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.41 : 1,621.36 = 351.19 : x
  2. Step 2: Convert to fraction form
    1,081.41/1,621.36 = 351.19/x
  3. Step 3: Cross multiply
    1,081.41x = 1,621.36 × 351.19
  4. Step 4: Simplify right side
    1,081.41x = 569,405.42
  5. Step 5: Solve for x
    x = 569,405.42/1,081.41
  6. Step 6: Final answer
    x = 526.54

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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.