Home / 1,216.93-1,823.87-668.15

Finding the Fourth Proportional to 1,216.93, 1,823.87 and 668.15

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Solution

The fourth proportional to 1,216.93, 1,823.87 and 668.15 is: 1,001.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.93 : 1,823.87 = 668.15 : x
  2. Step 2: Convert to fraction form
    1,216.93/1,823.87 = 668.15/x
  3. Step 3: Cross multiply
    1,216.93x = 1,823.87 × 668.15
  4. Step 4: Simplify right side
    1,216.93x = 1,218,624.97
  5. Step 5: Solve for x
    x = 1,218,624.97/1,216.93
  6. Step 6: Final answer
    x = 1,001.39

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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.