Home / 3,988.11-5,983.04-1,215.00

Finding the Fourth Proportional to 3,988.11, 5,983.04 and 1,215.00

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Solution

The fourth proportional to 3,988.11, 5,983.04 and 1,215.00 is: 1,822.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.11 : 5,983.04 = 1,215.00 : x
  2. Step 2: Convert to fraction form
    3,988.11/5,983.04 = 1,215.00/x
  3. Step 3: Cross multiply
    3,988.11x = 5,983.04 × 1,215.00
  4. Step 4: Simplify right side
    3,988.11x = 7,269,403.09
  5. Step 5: Solve for x
    x = 7,269,403.09/3,988.11
  6. Step 6: Final answer
    x = 1,822.77

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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.