Home / 5,143.37-7,714.20-1,680.62

Finding the Fourth Proportional to 5,143.37, 7,714.20 and 1,680.62

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Solution

The fourth proportional to 5,143.37, 7,714.20 and 1,680.62 is: 2,520.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.37 : 7,714.20 = 1,680.62 : x
  2. Step 2: Convert to fraction form
    5,143.37/7,714.20 = 1,680.62/x
  3. Step 3: Cross multiply
    5,143.37x = 7,714.20 × 1,680.62
  4. Step 4: Simplify right side
    5,143.37x = 12,964,638.80
  5. Step 5: Solve for x
    x = 12,964,638.80/5,143.37
  6. Step 6: Final answer
    x = 2,520.65

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1.5x scale

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.