Home / 2,812.35-3,880.43-1,632.79

Finding the Fourth Proportional to 2,812.35, 3,880.43 and 1,632.79

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Solution

The fourth proportional to 2,812.35, 3,880.43 and 1,632.79 is: 2,252.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.35 : 3,880.43 = 1,632.79 : x
  2. Step 2: Convert to fraction form
    2,812.35/3,880.43 = 1,632.79/x
  3. Step 3: Cross multiply
    2,812.35x = 3,880.43 × 1,632.79
  4. Step 4: Simplify right side
    2,812.35x = 6,335,907.90
  5. Step 5: Solve for x
    x = 6,335,907.90/2,812.35
  6. Step 6: Final answer
    x = 2,252.89

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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.