Home / 3,983.18-5,974.77-1,386.12

Finding the Fourth Proportional to 3,983.18, 5,974.77 and 1,386.12

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Solution

The fourth proportional to 3,983.18, 5,974.77 and 1,386.12 is: 2,079.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.18 : 5,974.77 = 1,386.12 : x
  2. Step 2: Convert to fraction form
    3,983.18/5,974.77 = 1,386.12/x
  3. Step 3: Cross multiply
    3,983.18x = 5,974.77 × 1,386.12
  4. Step 4: Simplify right side
    3,983.18x = 8,281,748.19
  5. Step 5: Solve for x
    x = 8,281,748.19/3,983.18
  6. Step 6: Final answer
    x = 2,079.18

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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.