Home / 1,234.68-1,853.84-1,212.81

Finding the Fourth Proportional to 1,234.68, 1,853.84 and 1,212.81

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Solution

The fourth proportional to 1,234.68, 1,853.84 and 1,212.81 is: 1,821.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234.68 : 1,853.84 = 1,212.81 : x
  2. Step 2: Convert to fraction form
    1,234.68/1,853.84 = 1,212.81/x
  3. Step 3: Cross multiply
    1,234.68x = 1,853.84 × 1,212.81
  4. Step 4: Simplify right side
    1,234.68x = 2,248,355.69
  5. Step 5: Solve for x
    x = 2,248,355.69/1,234.68
  6. Step 6: Final answer
    x = 1,821.00

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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.