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Finding the Fourth Proportional to 2,007.92, 2,771.20 and 1,955.28

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Solution

The fourth proportional to 2,007.92, 2,771.20 and 1,955.28 is: 2,698.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.92 : 2,771.20 = 1,955.28 : x
  2. Step 2: Convert to fraction form
    2,007.92/2,771.20 = 1,955.28/x
  3. Step 3: Cross multiply
    2,007.92x = 2,771.20 × 1,955.28
  4. Step 4: Simplify right side
    2,007.92x = 5,418,471.94
  5. Step 5: Solve for x
    x = 5,418,471.94/2,007.92
  6. Step 6: Final answer
    x = 2,698.55

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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.