Home / 3,989.04-5,984.30-1,215.96

Finding the Fourth Proportional to 3,989.04, 5,984.30 and 1,215.96

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Solution

The fourth proportional to 3,989.04, 5,984.30 and 1,215.96 is: 1,824.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.04 : 5,984.30 = 1,215.96 : x
  2. Step 2: Convert to fraction form
    3,989.04/5,984.30 = 1,215.96/x
  3. Step 3: Cross multiply
    3,989.04x = 5,984.30 × 1,215.96
  4. Step 4: Simplify right side
    3,989.04x = 7,276,669.43
  5. Step 5: Solve for x
    x = 7,276,669.43/3,989.04
  6. Step 6: Final answer
    x = 1,824.17

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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.