Home / 2,717.71-4,076.28-868.79

Finding the Fourth Proportional to 2,717.71, 4,076.28 and 868.79

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Solution

The fourth proportional to 2,717.71, 4,076.28 and 868.79 is: 1,303.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.71 : 4,076.28 = 868.79 : x
  2. Step 2: Convert to fraction form
    2,717.71/4,076.28 = 868.79/x
  3. Step 3: Cross multiply
    2,717.71x = 4,076.28 × 868.79
  4. Step 4: Simplify right side
    2,717.71x = 3,541,441.49
  5. Step 5: Solve for x
    x = 3,541,441.49/2,717.71
  6. Step 6: Final answer
    x = 1,303.10

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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.