Home / 2,816.19-4,225.08-868.68

Finding the Fourth Proportional to 2,816.19, 4,225.08 and 868.68

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Solution

The fourth proportional to 2,816.19, 4,225.08 and 868.68 is: 1,303.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.19 : 4,225.08 = 868.68 : x
  2. Step 2: Convert to fraction form
    2,816.19/4,225.08 = 868.68/x
  3. Step 3: Cross multiply
    2,816.19x = 4,225.08 × 868.68
  4. Step 4: Simplify right side
    2,816.19x = 3,670,242.49
  5. Step 5: Solve for x
    x = 3,670,242.49/2,816.19
  6. Step 6: Final answer
    x = 1,303.27

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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.