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Finding the Fourth Proportional to 2,622.78, 3,624.62 and 2,149.92

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Solution

The fourth proportional to 2,622.78, 3,624.62 and 2,149.92 is: 2,971.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.78 : 3,624.62 = 2,149.92 : x
  2. Step 2: Convert to fraction form
    2,622.78/3,624.62 = 2,149.92/x
  3. Step 3: Cross multiply
    2,622.78x = 3,624.62 × 2,149.92
  4. Step 4: Simplify right side
    2,622.78x = 7,792,632.28
  5. Step 5: Solve for x
    x = 7,792,632.28/2,622.78
  6. Step 6: Final answer
    x = 2,971.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.