Home / 6,981.68-10,469.78-2,820.92

Finding the Fourth Proportional to 6,981.68, 10,469.78 and 2,820.92

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Solution

The fourth proportional to 6,981.68, 10,469.78 and 2,820.92 is: 4,230.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.68 : 10,469.78 = 2,820.92 : x
  2. Step 2: Convert to fraction form
    6,981.68/10,469.78 = 2,820.92/x
  3. Step 3: Cross multiply
    6,981.68x = 10,469.78 × 2,820.92
  4. Step 4: Simplify right side
    6,981.68x = 29,534,411.80
  5. Step 5: Solve for x
    x = 29,534,411.80/6,981.68
  6. Step 6: Final answer
    x = 4,230.27

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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.