Home / 3,215-4,821.26-1,266.14

Finding the Fourth Proportional to 3,215, 4,821.26 and 1,266.14

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Solution

The fourth proportional to 3,215, 4,821.26 and 1,266.14 is: 1,898.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215 : 4,821.26 = 1,266.14 : x
  2. Step 2: Convert to fraction form
    3,215/4,821.26 = 1,266.14/x
  3. Step 3: Cross multiply
    3,215x = 4,821.26 × 1,266.14
  4. Step 4: Simplify right side
    3,215x = 6,104,390.14
  5. Step 5: Solve for x
    x = 6,104,390.14/3,215
  6. Step 6: Final answer
    x = 1,898.72

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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.