Home / 3,811.24-5,716.80-1,214.16

Finding the Fourth Proportional to 3,811.24, 5,716.80 and 1,214.16

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Solution

The fourth proportional to 3,811.24, 5,716.80 and 1,214.16 is: 1,821.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.24 : 5,716.80 = 1,214.16 : x
  2. Step 2: Convert to fraction form
    3,811.24/5,716.80 = 1,214.16/x
  3. Step 3: Cross multiply
    3,811.24x = 5,716.80 × 1,214.16
  4. Step 4: Simplify right side
    3,811.24x = 6,941,109.89
  5. Step 5: Solve for x
    x = 6,941,109.89/3,811.24
  6. Step 6: Final answer
    x = 1,821.22

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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.