Home / 3,811.84-5,718.08-1,214.24

Finding the Fourth Proportional to 3,811.84, 5,718.08 and 1,214.24

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Solution

The fourth proportional to 3,811.84, 5,718.08 and 1,214.24 is: 1,821.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.84 : 5,718.08 = 1,214.24 : x
  2. Step 2: Convert to fraction form
    3,811.84/5,718.08 = 1,214.24/x
  3. Step 3: Cross multiply
    3,811.84x = 5,718.08 × 1,214.24
  4. Step 4: Simplify right side
    3,811.84x = 6,943,121.46
  5. Step 5: Solve for x
    x = 6,943,121.46/3,811.84
  6. Step 6: Final answer
    x = 1,821.46

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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.