Home / 4,787.16-7,180.78-1,324.68

Finding the Fourth Proportional to 4,787.16, 7,180.78 and 1,324.68

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Solution

The fourth proportional to 4,787.16, 7,180.78 and 1,324.68 is: 1,987.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.16 : 7,180.78 = 1,324.68 : x
  2. Step 2: Convert to fraction form
    4,787.16/7,180.78 = 1,324.68/x
  3. Step 3: Cross multiply
    4,787.16x = 7,180.78 × 1,324.68
  4. Step 4: Simplify right side
    4,787.16x = 9,512,235.65
  5. Step 5: Solve for x
    x = 9,512,235.65/4,787.16
  6. Step 6: Final answer
    x = 1,987.03

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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.