Home / 8,084.76-12,128.43-2,821.23

Finding the Fourth Proportional to 8,084.76, 12,128.43 and 2,821.23

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Solution

The fourth proportional to 8,084.76, 12,128.43 and 2,821.23 is: 4,232.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,084.76 : 12,128.43 = 2,821.23 : x
  2. Step 2: Convert to fraction form
    8,084.76/12,128.43 = 2,821.23/x
  3. Step 3: Cross multiply
    8,084.76x = 12,128.43 × 2,821.23
  4. Step 4: Simplify right side
    8,084.76x = 34,217,101.15
  5. Step 5: Solve for x
    x = 34,217,101.15/8,084.76
  6. Step 6: Final answer
    x = 4,232.30

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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.