Home / 2,121.12-3,181.68-582.24

Finding the Fourth Proportional to 2,121.12, 3,181.68 and 582.24

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Solution

The fourth proportional to 2,121.12, 3,181.68 and 582.24 is: 873.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.12 : 3,181.68 = 582.24 : x
  2. Step 2: Convert to fraction form
    2,121.12/3,181.68 = 582.24/x
  3. Step 3: Cross multiply
    2,121.12x = 3,181.68 × 582.24
  4. Step 4: Simplify right side
    2,121.12x = 1,852,501.36
  5. Step 5: Solve for x
    x = 1,852,501.36/2,121.12
  6. Step 6: Final answer
    x = 873.36

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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.