Home / 3,315.12-4,972.08-1,234.65

Finding the Fourth Proportional to 3,315.12, 4,972.08 and 1,234.65

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Solution

The fourth proportional to 3,315.12, 4,972.08 and 1,234.65 is: 1,851.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.12 : 4,972.08 = 1,234.65 : x
  2. Step 2: Convert to fraction form
    3,315.12/4,972.08 = 1,234.65/x
  3. Step 3: Cross multiply
    3,315.12x = 4,972.08 × 1,234.65
  4. Step 4: Simplify right side
    3,315.12x = 6,138,778.57
  5. Step 5: Solve for x
    x = 6,138,778.57/3,315.12
  6. Step 6: Final answer
    x = 1,851.75

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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.