Home / 2,181.58-3,272.40-538.12

Finding the Fourth Proportional to 2,181.58, 3,272.40 and 538.12

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Solution

The fourth proportional to 2,181.58, 3,272.40 and 538.12 is: 807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.58 : 3,272.40 = 538.12 : x
  2. Step 2: Convert to fraction form
    2,181.58/3,272.40 = 538.12/x
  3. Step 3: Cross multiply
    2,181.58x = 3,272.40 × 538.12
  4. Step 4: Simplify right side
    2,181.58x = 1,760,943.89
  5. Step 5: Solve for x
    x = 1,760,943.89/2,181.58
  6. Step 6: Final answer
    x = 807.19

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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.