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Finding the Fourth Proportional to 2,873.70, 3,960.18 and 2,868.84

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Solution

The fourth proportional to 2,873.70, 3,960.18 and 2,868.84 is: 3,953.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,873.70 : 3,960.18 = 2,868.84 : x
  2. Step 2: Convert to fraction form
    2,873.70/3,960.18 = 2,868.84/x
  3. Step 3: Cross multiply
    2,873.70x = 3,960.18 × 2,868.84
  4. Step 4: Simplify right side
    2,873.70x = 11,361,122.79
  5. Step 5: Solve for x
    x = 11,361,122.79/2,873.70
  6. Step 6: Final answer
    x = 3,953.48

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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.