Home / 2,816.43-4,224.93-868.78

Finding the Fourth Proportional to 2,816.43, 4,224.93 and 868.78

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Solution

The fourth proportional to 2,816.43, 4,224.93 and 868.78 is: 1,303.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.43 : 4,224.93 = 868.78 : x
  2. Step 2: Convert to fraction form
    2,816.43/4,224.93 = 868.78/x
  3. Step 3: Cross multiply
    2,816.43x = 4,224.93 × 868.78
  4. Step 4: Simplify right side
    2,816.43x = 3,670,534.69
  5. Step 5: Solve for x
    x = 3,670,534.69/2,816.43
  6. Step 6: Final answer
    x = 1,303.26

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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.