Home / 2,816.09-4,224.27-868.40

Finding the Fourth Proportional to 2,816.09, 4,224.27 and 868.40

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Solution

The fourth proportional to 2,816.09, 4,224.27 and 868.40 is: 1,302.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.09 : 4,224.27 = 868.40 : x
  2. Step 2: Convert to fraction form
    2,816.09/4,224.27 = 868.40/x
  3. Step 3: Cross multiply
    2,816.09x = 4,224.27 × 868.40
  4. Step 4: Simplify right side
    2,816.09x = 3,668,356.07
  5. Step 5: Solve for x
    x = 3,668,356.07/2,816.09
  6. Step 6: Final answer
    x = 1,302.64

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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.