Home / 4,310.80-6,467.20-1,389

Finding the Fourth Proportional to 4,310.80, 6,467.20 and 1,389

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Solution

The fourth proportional to 4,310.80, 6,467.20 and 1,389 is: 2,083.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,310.80 : 6,467.20 = 1,389 : x
  2. Step 2: Convert to fraction form
    4,310.80/6,467.20 = 1,389/x
  3. Step 3: Cross multiply
    4,310.80x = 6,467.20 × 1,389
  4. Step 4: Simplify right side
    4,310.80x = 8,982,940.80
  5. Step 5: Solve for x
    x = 8,982,940.80/4,310.80
  6. Step 6: Final answer
    x = 2,083.82

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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.