Home / 5,680.44-8,520.12-1,981.80

Finding the Fourth Proportional to 5,680.44, 8,520.12 and 1,981.80

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Solution

The fourth proportional to 5,680.44, 8,520.12 and 1,981.80 is: 2,972.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,680.44 : 8,520.12 = 1,981.80 : x
  2. Step 2: Convert to fraction form
    5,680.44/8,520.12 = 1,981.80/x
  3. Step 3: Cross multiply
    5,680.44x = 8,520.12 × 1,981.80
  4. Step 4: Simplify right side
    5,680.44x = 16,885,173.82
  5. Step 5: Solve for x
    x = 16,885,173.82/5,680.44
  6. Step 6: Final answer
    x = 2,972.51

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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.