Home / 3,212-4,814.28-1,455.14

Finding the Fourth Proportional to 3,212, 4,814.28 and 1,455.14

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Solution

The fourth proportional to 3,212, 4,814.28 and 1,455.14 is: 2,181.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212 : 4,814.28 = 1,455.14 : x
  2. Step 2: Convert to fraction form
    3,212/4,814.28 = 1,455.14/x
  3. Step 3: Cross multiply
    3,212x = 4,814.28 × 1,455.14
  4. Step 4: Simplify right side
    3,212x = 7,005,451.40
  5. Step 5: Solve for x
    x = 7,005,451.40/3,212
  6. Step 6: Final answer
    x = 2,181.02

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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.