Home / 3,989.61-5,984.46-1,216.71

Finding the Fourth Proportional to 3,989.61, 5,984.46 and 1,216.71

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Solution

The fourth proportional to 3,989.61, 5,984.46 and 1,216.71 is: 1,825.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.61 : 5,984.46 = 1,216.71 : x
  2. Step 2: Convert to fraction form
    3,989.61/5,984.46 = 1,216.71/x
  3. Step 3: Cross multiply
    3,989.61x = 5,984.46 × 1,216.71
  4. Step 4: Simplify right side
    3,989.61x = 7,281,352.33
  5. Step 5: Solve for x
    x = 7,281,352.33/3,989.61
  6. Step 6: Final answer
    x = 1,825.08

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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.