Home / 4,020.60-6,031.92-1,680.20

Finding the Fourth Proportional to 4,020.60, 6,031.92 and 1,680.20

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Solution

The fourth proportional to 4,020.60, 6,031.92 and 1,680.20 is: 2,520.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,020.60 : 6,031.92 = 1,680.20 : x
  2. Step 2: Convert to fraction form
    4,020.60/6,031.92 = 1,680.20/x
  3. Step 3: Cross multiply
    4,020.60x = 6,031.92 × 1,680.20
  4. Step 4: Simplify right side
    4,020.60x = 10,134,831.98
  5. Step 5: Solve for x
    x = 10,134,831.98/4,020.60
  6. Step 6: Final answer
    x = 2,520.73

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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.