Home / 3,988.20-5,983.21-1,214.92

Finding the Fourth Proportional to 3,988.20, 5,983.21 and 1,214.92

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Solution

The fourth proportional to 3,988.20, 5,983.21 and 1,214.92 is: 1,822.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.20 : 5,983.21 = 1,214.92 : x
  2. Step 2: Convert to fraction form
    3,988.20/5,983.21 = 1,214.92/x
  3. Step 3: Cross multiply
    3,988.20x = 5,983.21 × 1,214.92
  4. Step 4: Simplify right side
    3,988.20x = 7,269,146.46
  5. Step 5: Solve for x
    x = 7,269,146.46/3,988.20
  6. Step 6: Final answer
    x = 1,822.66

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1.5x scale

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.