Home / 5,120.34-7,680.15-2,922.18

Finding the Fourth Proportional to 5,120.34, 7,680.15 and 2,922.18

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Solution

The fourth proportional to 5,120.34, 7,680.15 and 2,922.18 is: 4,383.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.34 : 7,680.15 = 2,922.18 : x
  2. Step 2: Convert to fraction form
    5,120.34/7,680.15 = 2,922.18/x
  3. Step 3: Cross multiply
    5,120.34x = 7,680.15 × 2,922.18
  4. Step 4: Simplify right side
    5,120.34x = 22,442,780.73
  5. Step 5: Solve for x
    x = 22,442,780.73/5,120.34
  6. Step 6: Final answer
    x = 4,383.06

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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.